Enum gclient::ext::sp_core::bounded::alloc::borrow::Cow

1.0.0 · source ·
pub enum Cow<'a, B>
where B: 'a + ToOwned + ?Sized,
{ Borrowed(&'a B), Owned(<B as ToOwned>::Owned), }
Expand description

A clone-on-write smart pointer.

The type Cow is a smart pointer providing clone-on-write functionality: it can enclose and provide immutable access to borrowed data, and clone the data lazily when mutation or ownership is required. The type is designed to work with general borrowed data via the Borrow trait.

Cow implements Deref, which means that you can call non-mutating methods directly on the data it encloses. If mutation is desired, to_mut will obtain a mutable reference to an owned value, cloning if necessary.

If you need reference-counting pointers, note that Rc::make_mut and Arc::make_mut can provide clone-on-write functionality as well.

§Examples

use std::borrow::Cow;

fn abs_all(input: &mut Cow<'_, [i32]>) {
    for i in 0..input.len() {
        let v = input[i];
        if v < 0 {
            // Clones into a vector if not already owned.
            input.to_mut()[i] = -v;
        }
    }
}

// No clone occurs because `input` doesn't need to be mutated.
let slice = [0, 1, 2];
let mut input = Cow::from(&slice[..]);
abs_all(&mut input);

// Clone occurs because `input` needs to be mutated.
let slice = [-1, 0, 1];
let mut input = Cow::from(&slice[..]);
abs_all(&mut input);

// No clone occurs because `input` is already owned.
let mut input = Cow::from(vec![-1, 0, 1]);
abs_all(&mut input);

Another example showing how to keep Cow in a struct:

use std::borrow::Cow;

struct Items<'a, X> where [X]: ToOwned<Owned = Vec<X>> {
    values: Cow<'a, [X]>,
}

impl<'a, X: Clone + 'a> Items<'a, X> where [X]: ToOwned<Owned = Vec<X>> {
    fn new(v: Cow<'a, [X]>) -> Self {
        Items { values: v }
    }
}

// Creates a container from borrowed values of a slice
let readonly = [1, 2];
let borrowed = Items::new((&readonly[..]).into());
match borrowed {
    Items { values: Cow::Borrowed(b) } => println!("borrowed {b:?}"),
    _ => panic!("expect borrowed value"),
}

let mut clone_on_write = borrowed;
// Mutates the data from slice into owned vec and pushes a new value on top
clone_on_write.values.to_mut().push(3);
println!("clone_on_write = {:?}", clone_on_write.values);

// The data was mutated. Let's check it out.
match clone_on_write {
    Items { values: Cow::Owned(_) } => println!("clone_on_write contains owned data"),
    _ => panic!("expect owned data"),
}

Variants§

§1.0.0

Borrowed(&'a B)

Borrowed data.

§1.0.0

Owned(<B as ToOwned>::Owned)

Owned data.

Implementations§

source§

impl<B> Cow<'_, B>
where B: ToOwned + ?Sized,

source

pub const fn is_borrowed(&self) -> bool

🔬This is a nightly-only experimental API. (cow_is_borrowed)

Returns true if the data is borrowed, i.e. if to_mut would require additional work.

§Examples
#![feature(cow_is_borrowed)]
use std::borrow::Cow;

let cow = Cow::Borrowed("moo");
assert!(cow.is_borrowed());

let bull: Cow<'_, str> = Cow::Owned("...moo?".to_string());
assert!(!bull.is_borrowed());
source

pub const fn is_owned(&self) -> bool

🔬This is a nightly-only experimental API. (cow_is_borrowed)

Returns true if the data is owned, i.e. if to_mut would be a no-op.

§Examples
#![feature(cow_is_borrowed)]
use std::borrow::Cow;

let cow: Cow<'_, str> = Cow::Owned("moo".to_string());
assert!(cow.is_owned());

let bull = Cow::Borrowed("...moo?");
assert!(!bull.is_owned());
1.0.0 · source

pub fn to_mut(&mut self) -> &mut <B as ToOwned>::Owned

Acquires a mutable reference to the owned form of the data.

Clones the data if it is not already owned.

§Examples
use std::borrow::Cow;

let mut cow = Cow::Borrowed("foo");
cow.to_mut().make_ascii_uppercase();

assert_eq!(
  cow,
  Cow::Owned(String::from("FOO")) as Cow<'_, str>
);
1.0.0 · source

pub fn into_owned(self) -> <B as ToOwned>::Owned

Extracts the owned data.

Clones the data if it is not already owned.

§Examples

Calling into_owned on a Cow::Borrowed returns a clone of the borrowed data:

use std::borrow::Cow;

let s = "Hello world!";
let cow = Cow::Borrowed(s);

assert_eq!(
  cow.into_owned(),
  String::from(s)
);

Calling into_owned on a Cow::Owned returns the owned data. The data is moved out of the Cow without being cloned.

use std::borrow::Cow;

let s = "Hello world!";
let cow: Cow<'_, str> = Cow::Owned(String::from(s));

assert_eq!(
  cow.into_owned(),
  String::from(s)
);

Trait Implementations§

1.14.0 · source§

impl<'a> Add<&'a str> for Cow<'a, str>

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type Output = Cow<'a, str>

The resulting type after applying the + operator.
source§

fn add(self, rhs: &'a str) -> <Cow<'a, str> as Add<&'a str>>::Output

Performs the + operation. Read more
1.14.0 · source§

impl<'a> Add for Cow<'a, str>

§

type Output = Cow<'a, str>

The resulting type after applying the + operator.
source§

fn add(self, rhs: Cow<'a, str>) -> <Cow<'a, str> as Add>::Output

Performs the + operation. Read more
1.14.0 · source§

impl<'a> AddAssign<&'a str> for Cow<'a, str>

source§

fn add_assign(&mut self, rhs: &'a str)

Performs the += operation. Read more
1.14.0 · source§

impl<'a> AddAssign for Cow<'a, str>

source§

fn add_assign(&mut self, rhs: Cow<'a, str>)

Performs the += operation. Read more
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impl<'a> Arg for Cow<'a, CStr>

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fn as_str(&self) -> Result<&str, Errno>

Returns a view of this string as a string slice.
§

fn to_string_lossy(&self) -> Cow<'_, str>

Returns a potentially-lossy rendering of this string as a Cow<'_, str>.
§

fn as_cow_c_str(&self) -> Result<Cow<'_, CStr>, Errno>

Returns a view of this string as a maybe-owned CStr.
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fn into_c_str<'b>(self) -> Result<Cow<'b, CStr>, Errno>
where Cow<'a, CStr>: 'b,

Consumes self and returns a view of this string as a maybe-owned CStr.
§

fn into_with_c_str<T, F>(self, f: F) -> Result<T, Errno>
where Cow<'a, CStr>: Sized, F: FnOnce(&CStr) -> Result<T, Errno>,

Runs a closure with self passed in as a &CStr.
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impl<'a> Arg for Cow<'a, CStr>

§

fn as_str(&self) -> Result<&str, Errno>

Returns a view of this string as a string slice.
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fn to_string_lossy(&self) -> Cow<'_, str>

Returns a potentially-lossy rendering of this string as a Cow<'_, str>.
§

fn as_cow_c_str(&self) -> Result<Cow<'_, CStr>, Errno>

Returns a view of this string as a maybe-owned CStr.
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fn into_c_str<'b>(self) -> Result<Cow<'b, CStr>, Errno>
where Cow<'a, CStr>: 'b,

Consumes self and returns a view of this string as a maybe-owned CStr.
§

fn into_with_c_str<T, F>(self, f: F) -> Result<T, Errno>
where Cow<'a, CStr>: Sized, F: FnOnce(&CStr) -> Result<T, Errno>,

Runs a closure with self passed in as a &CStr.
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impl<'a> Arg for Cow<'a, OsStr>

§

fn as_str(&self) -> Result<&str, Errno>

Returns a view of this string as a string slice.
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fn to_string_lossy(&self) -> Cow<'_, str>

Returns a potentially-lossy rendering of this string as a Cow<'_, str>.
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fn as_cow_c_str(&self) -> Result<Cow<'_, CStr>, Errno>

Returns a view of this string as a maybe-owned CStr.
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fn into_c_str<'b>(self) -> Result<Cow<'b, CStr>, Errno>
where Cow<'a, OsStr>: 'b,

Consumes self and returns a view of this string as a maybe-owned CStr.
§

fn into_with_c_str<T, F>(self, f: F) -> Result<T, Errno>
where Cow<'a, OsStr>: Sized, F: FnOnce(&CStr) -> Result<T, Errno>,

Runs a closure with self passed in as a &CStr.
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impl<'a> Arg for Cow<'a, OsStr>

§

fn as_str(&self) -> Result<&str, Errno>

Returns a view of this string as a string slice.
§

fn to_string_lossy(&self) -> Cow<'_, str>

Returns a potentially-lossy rendering of this string as a Cow<'_, str>.
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fn as_cow_c_str(&self) -> Result<Cow<'_, CStr>, Errno>

Returns a view of this string as a maybe-owned CStr.
§

fn into_c_str<'b>(self) -> Result<Cow<'b, CStr>, Errno>
where Cow<'a, OsStr>: 'b,

Consumes self and returns a view of this string as a maybe-owned CStr.
§

fn into_with_c_str<T, F>(self, f: F) -> Result<T, Errno>
where Cow<'a, OsStr>: Sized, F: FnOnce(&CStr) -> Result<T, Errno>,

Runs a closure with self passed in as a &CStr.
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impl<'a> Arg for Cow<'a, str>

§

fn as_str(&self) -> Result<&str, Errno>

Returns a view of this string as a string slice.
§

fn to_string_lossy(&self) -> Cow<'_, str>

Returns a potentially-lossy rendering of this string as a Cow<'_, str>.
§

fn as_cow_c_str(&self) -> Result<Cow<'_, CStr>, Errno>

Returns a view of this string as a maybe-owned CStr.
§

fn into_c_str<'b>(self) -> Result<Cow<'b, CStr>, Errno>
where Cow<'a, str>: 'b,

Consumes self and returns a view of this string as a maybe-owned CStr.
§

fn into_with_c_str<T, F>(self, f: F) -> Result<T, Errno>
where Cow<'a, str>: Sized, F: FnOnce(&CStr) -> Result<T, Errno>,

Runs a closure with self passed in as a &CStr.
§

impl<'a> Arg for Cow<'a, str>

§

fn as_str(&self) -> Result<&str, Errno>

Returns a view of this string as a string slice.
§

fn to_string_lossy(&self) -> Cow<'_, str>

Returns a potentially-lossy rendering of this string as a Cow<'_, str>.
§

fn as_cow_c_str(&self) -> Result<Cow<'_, CStr>, Errno>

Returns a view of this string as a maybe-owned CStr.
§

fn into_c_str<'b>(self) -> Result<Cow<'b, CStr>, Errno>
where Cow<'a, str>: 'b,

Consumes self and returns a view of this string as a maybe-owned CStr.
§

fn into_with_c_str<T, F>(self, f: F) -> Result<T, Errno>
where Cow<'a, str>: Sized, F: FnOnce(&CStr) -> Result<T, Errno>,

Runs a closure with self passed in as a &CStr.
1.8.0 · source§

impl AsRef<Path> for Cow<'_, OsStr>

source§

fn as_ref(&self) -> &Path

Converts this type into a shared reference of the (usually inferred) input type.
1.0.0 · source§

impl<T> AsRef<T> for Cow<'_, T>
where T: ToOwned + ?Sized,

source§

fn as_ref(&self) -> &T

Converts this type into a shared reference of the (usually inferred) input type.
1.0.0 · source§

impl<'a, B> Borrow<B> for Cow<'a, B>
where B: ToOwned + ?Sized,

source§

fn borrow(&self) -> &B

Immutably borrows from an owned value. Read more
1.0.0 · source§

impl<B> Clone for Cow<'_, B>
where B: ToOwned + ?Sized,

source§

fn clone(&self) -> Cow<'_, B>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Cow<'_, B>)

Performs copy-assignment from source. Read more
1.0.0 · source§

impl<B> Debug for Cow<'_, B>
where B: Debug + ToOwned + ?Sized, <B as ToOwned>::Owned: Debug,

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<'a, T> Decode for Cow<'a, T>
where T: ToOwned + ?Sized, <T as ToOwned>::Owned: Decode,

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fn decode<I>(input: &mut I) -> Result<Cow<'a, T>, Error>
where I: Input,

Attempt to deserialise the value from input.
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fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>
where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory. Read more
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fn skip<I>(input: &mut I) -> Result<(), Error>
where I: Input,

Attempt to skip the encoded value from input. Read more
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fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type. Read more
1.11.0 · source§

impl<B> Default for Cow<'_, B>
where B: ToOwned + ?Sized, <B as ToOwned>::Owned: Default,

source§

fn default() -> Cow<'_, B>

Creates an owned Cow<’a, B> with the default value for the contained owned value.

1.0.0 · source§

impl<B> Deref for Cow<'_, B>
where B: ToOwned + ?Sized, <B as ToOwned>::Owned: Borrow<B>,

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type Target = B

The resulting type after dereferencing.
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fn deref(&self) -> &B

Dereferences the value.
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impl<'de, 'a, T> Deserialize<'de> for Cow<'a, T>
where T: ToOwned + ?Sized, <T as ToOwned>::Owned: Deserialize<'de>,

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fn deserialize<D>( deserializer: D, ) -> Result<Cow<'a, T>, <D as Deserializer<'de>>::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
1.0.0 · source§

impl<B> Display for Cow<'_, B>
where B: Display + ToOwned + ?Sized, <B as ToOwned>::Owned: Display,

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<'a, T> EncodeAsType for Cow<'a, T>
where T: 'a + EncodeAsType + ToOwned + ?Sized,

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fn encode_as_type_to<R>( &self, type_id: <R as TypeResolver>::TypeId, types: &R, out: &mut Vec<u8>, ) -> Result<(), Error>
where R: TypeResolver,

Given some type_id, types, a context and some output target for the SCALE encoded bytes, attempt to SCALE encode the current value into the type given by type_id.
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fn encode_as_type<R>( &self, type_id: <R as TypeResolver>::TypeId, types: &R, ) -> Result<Vec<u8>, Error>
where R: TypeResolver,

This is a helper function which internally calls [EncodeAsType::encode_as_type_to]. Prefer to implement that instead.
1.52.0 · source§

impl<'a> Extend<Cow<'a, OsStr>> for OsString

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fn extend<T>(&mut self, iter: T)
where T: IntoIterator<Item = Cow<'a, OsStr>>,

Extends a collection with the contents of an iterator. Read more
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fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
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fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)
Reserves capacity in a collection for the given number of additional elements. Read more
1.19.0 · source§

impl<'a> Extend<Cow<'a, str>> for String

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fn extend<I>(&mut self, iter: I)
where I: IntoIterator<Item = Cow<'a, str>>,

Extends a collection with the contents of an iterator. Read more
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fn extend_one(&mut self, s: Cow<'a, str>)

🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
source§

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)
Reserves capacity in a collection for the given number of additional elements. Read more
1.8.0 · source§

impl<'a, T> From<&'a [T]> for Cow<'a, [T]>
where T: Clone,

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fn from(s: &'a [T]) -> Cow<'a, [T]>

Creates a Borrowed variant of Cow from a slice.

This conversion does not allocate or clone the data.

1.77.0 · source§

impl<'a, T, const N: usize> From<&'a [T; N]> for Cow<'a, [T]>
where T: Clone,

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fn from(s: &'a [T; N]) -> Cow<'a, [T]>

Creates a Borrowed variant of Cow from a reference to an array.

This conversion does not allocate or clone the data.

1.28.0 · source§

impl<'a> From<&'a CStr> for Cow<'a, CStr>

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fn from(s: &'a CStr) -> Cow<'a, CStr>

Converts a CStr into a borrowed Cow without copying or allocating.

1.28.0 · source§

impl<'a> From<&'a CString> for Cow<'a, CStr>

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fn from(s: &'a CString) -> Cow<'a, CStr>

Converts a &CString into a borrowed Cow without copying or allocating.

1.28.0 · source§

impl<'a> From<&'a OsStr> for Cow<'a, OsStr>

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fn from(s: &'a OsStr) -> Cow<'a, OsStr>

Converts the string reference into a Cow::Borrowed.

1.28.0 · source§

impl<'a> From<&'a OsString> for Cow<'a, OsStr>

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fn from(s: &'a OsString) -> Cow<'a, OsStr>

Converts the string reference into a Cow::Borrowed.

1.6.0 · source§

impl<'a> From<&'a Path> for Cow<'a, Path>

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fn from(s: &'a Path) -> Cow<'a, Path>

Creates a clone-on-write pointer from a reference to Path.

This conversion does not clone or allocate.

1.28.0 · source§

impl<'a> From<&'a PathBuf> for Cow<'a, Path>

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fn from(p: &'a PathBuf) -> Cow<'a, Path>

Creates a clone-on-write pointer from a reference to PathBuf.

This conversion does not clone or allocate.

1.28.0 · source§

impl<'a> From<&'a String> for Cow<'a, str>

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fn from(s: &'a String) -> Cow<'a, str>

Converts a String reference into a Borrowed variant. No heap allocation is performed, and the string is not copied.

§Example
let s = "eggplant".to_string();
assert_eq!(Cow::from(&s), Cow::Borrowed("eggplant"));
1.28.0 · source§

impl<'a, T> From<&'a Vec<T>> for Cow<'a, [T]>
where T: Clone,

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fn from(v: &'a Vec<T>) -> Cow<'a, [T]>

Creates a Borrowed variant of Cow from a reference to Vec.

This conversion does not allocate or clone the data.

1.0.0 · source§

impl<'a> From<&'a str> for Cow<'a, str>

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fn from(s: &'a str) -> Cow<'a, str>

Converts a string slice into a Borrowed variant. No heap allocation is performed, and the string is not copied.

§Example
assert_eq!(Cow::from("eggplant"), Cow::Borrowed("eggplant"));
1.28.0 · source§

impl<'a> From<CString> for Cow<'a, CStr>

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fn from(s: CString) -> Cow<'a, CStr>

Converts a CString into an owned Cow without copying or allocating.

1.45.0 · source§

impl<T> From<Cow<'_, [T]>> for Box<[T]>
where T: Clone,

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fn from(cow: Cow<'_, [T]>) -> Box<[T]>

Converts a Cow<'_, [T]> into a Box<[T]>

When cow is the Cow::Borrowed variant, this conversion allocates on the heap and copies the underlying slice. Otherwise, it will try to reuse the owned Vec’s allocation.

1.45.0 · source§

impl From<Cow<'_, CStr>> for Box<CStr>

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fn from(cow: Cow<'_, CStr>) -> Box<CStr>

Converts a Cow<'a, CStr> into a Box<CStr>, by copying the contents if they are borrowed.

1.45.0 · source§

impl From<Cow<'_, OsStr>> for Box<OsStr>

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fn from(cow: Cow<'_, OsStr>) -> Box<OsStr>

Converts a Cow<'a, OsStr> into a Box<OsStr>, by copying the contents if they are borrowed.

1.45.0 · source§

impl From<Cow<'_, Path>> for Box<Path>

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fn from(cow: Cow<'_, Path>) -> Box<Path>

Creates a boxed Path from a clone-on-write pointer.

Converting from a Cow::Owned does not clone or allocate.

1.45.0 · source§

impl From<Cow<'_, str>> for Box<str>

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fn from(cow: Cow<'_, str>) -> Box<str>

Converts a Cow<'_, str> into a Box<str>

When cow is the Cow::Borrowed variant, this conversion allocates on the heap and copies the underlying str. Otherwise, it will try to reuse the owned String’s allocation.

§Examples
use std::borrow::Cow;

let unboxed = Cow::Borrowed("hello");
let boxed: Box<str> = Box::from(unboxed);
println!("{boxed}");
let unboxed = Cow::Owned("hello".to_string());
let boxed: Box<str> = Box::from(unboxed);
println!("{boxed}");
1.14.0 · source§

impl<'a, T> From<Cow<'a, [T]>> for Vec<T>
where [T]: ToOwned<Owned = Vec<T>>,

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fn from(s: Cow<'a, [T]>) -> Vec<T>

Converts a clone-on-write slice into a vector.

If s already owns a Vec<T>, it will be returned directly. If s is borrowing a slice, a new Vec<T> will be allocated and filled by cloning s’s items into it.

§Examples
let o: Cow<'_, [i32]> = Cow::Owned(vec![1, 2, 3]);
let b: Cow<'_, [i32]> = Cow::Borrowed(&[1, 2, 3]);
assert_eq!(Vec::from(o), Vec::from(b));
1.45.0 · source§

impl<'a, B> From<Cow<'a, B>> for Arc<B>
where B: ToOwned + ?Sized, Arc<B>: From<&'a B> + From<<B as ToOwned>::Owned>,

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fn from(cow: Cow<'a, B>) -> Arc<B>

Creates an atomically reference-counted pointer from a clone-on-write pointer by copying its content.

§Example
let cow: Cow<'_, str> = Cow::Borrowed("eggplant");
let shared: Arc<str> = Arc::from(cow);
assert_eq!("eggplant", &shared[..]);
1.45.0 · source§

impl<'a, B> From<Cow<'a, B>> for Rc<B>
where B: ToOwned + ?Sized, Rc<B>: From<&'a B> + From<<B as ToOwned>::Owned>,

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fn from(cow: Cow<'a, B>) -> Rc<B>

Creates a reference-counted pointer from a clone-on-write pointer by copying its content.

§Example
let cow: Cow<'_, str> = Cow::Borrowed("eggplant");
let shared: Rc<str> = Rc::from(cow);
assert_eq!("eggplant", &shared[..]);
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impl<'a, T, O> From<Cow<'a, BitSlice<T, O>>> for BitBox<T, O>
where T: BitStore, O: BitOrder,

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fn from(cow: Cow<'a, BitSlice<T, O>>) -> BitBox<T, O>

Converts to this type from the input type.
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impl<'a, T, O> From<Cow<'a, BitSlice<T, O>>> for BitVec<T, O>
where O: BitOrder, T: 'a + BitStore,

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fn from(cow: Cow<'a, BitSlice<T, O>>) -> BitVec<T, O>

Converts to this type from the input type.
1.28.0 · source§

impl<'a> From<Cow<'a, CStr>> for CString

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fn from(s: Cow<'a, CStr>) -> CString

Converts a Cow<'a, CStr> into a CString, by copying the contents if they are borrowed.

1.28.0 · source§

impl<'a> From<Cow<'a, OsStr>> for OsString

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fn from(s: Cow<'a, OsStr>) -> OsString

Converts a Cow<'a, OsStr> into an OsString, by copying the contents if they are borrowed.

1.28.0 · source§

impl<'a> From<Cow<'a, Path>> for PathBuf

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fn from(p: Cow<'a, Path>) -> PathBuf

Converts a clone-on-write pointer to an owned path.

Converting from a Cow::Owned does not clone or allocate.

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impl<'a, T, U> From<Cow<'a, T>> for Cow<'a, T, U>
where T: Beef + ?Sized, U: Capacity,

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fn from(stdcow: Cow<'a, T>) -> Cow<'a, T, U>

Converts to this type from the input type.
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impl<'a, T, U> From<Cow<'a, T, U>> for Cow<'a, T>
where T: Beef + ?Sized, U: Capacity,

§

fn from(cow: Cow<'a, T, U>) -> Cow<'a, T>

Converts to this type from the input type.
1.14.0 · source§

impl<'a> From<Cow<'a, str>> for String

source§

fn from(s: Cow<'a, str>) -> String

Converts a clone-on-write string to an owned instance of String.

This extracts the owned string, clones the string if it is not already owned.

§Example
// If the string is not owned...
let cow: Cow<'_, str> = Cow::Borrowed("eggplant");
// It will allocate on the heap and copy the string.
let owned: String = String::from(cow);
assert_eq!(&owned[..], "eggplant");
source§

impl<'a> From<Cow<'a, str>> for Value

source§

fn from(f: Cow<'a, str>) -> Value

Convert copy-on-write string to Value::String.

§Examples
use serde_json::Value;
use std::borrow::Cow;

let s: Cow<str> = Cow::Borrowed("lorem");
let x: Value = s.into();
use serde_json::Value;
use std::borrow::Cow;

let s: Cow<str> = Cow::Owned("lorem".to_owned());
let x: Value = s.into();
1.22.0 · source§

impl<'a, 'b> From<Cow<'b, str>> for Box<dyn Error + 'a>

source§

fn from(err: Cow<'b, str>) -> Box<dyn Error + 'a>

Converts a Cow into a box of dyn Error.

§Examples
use std::error::Error;
use std::mem;
use std::borrow::Cow;

let a_cow_str_error = Cow::from("a str error");
let a_boxed_error = Box::<dyn Error>::from(a_cow_str_error);
assert!(mem::size_of::<Box<dyn Error>>() == mem::size_of_val(&a_boxed_error))
1.22.0 · source§

impl<'a, 'b> From<Cow<'b, str>> for Box<dyn Error + Send + Sync + 'a>

source§

fn from(err: Cow<'b, str>) -> Box<dyn Error + Send + Sync + 'a>

Converts a Cow into a box of dyn Error + Send + Sync.

§Examples
use std::error::Error;
use std::mem;
use std::borrow::Cow;

let a_cow_str_error = Cow::from("a str error");
let a_boxed_error = Box::<dyn Error + Send + Sync>::from(a_cow_str_error);
assert!(
    mem::size_of::<Box<dyn Error + Send + Sync>>() == mem::size_of_val(&a_boxed_error))
§

impl<D, B> From<Cow<'static, B>> for Full<D>
where D: Buf + From<&'static B> + From<<B as ToOwned>::Owned>, B: ToOwned + ?Sized,

§

fn from(cow: Cow<'static, B>) -> Full<D>

Converts to this type from the input type.
1.28.0 · source§

impl<'a> From<OsString> for Cow<'a, OsStr>

source§

fn from(s: OsString) -> Cow<'a, OsStr>

Moves the string into a Cow::Owned.

1.6.0 · source§

impl<'a> From<PathBuf> for Cow<'a, Path>

source§

fn from(s: PathBuf) -> Cow<'a, Path>

Creates a clone-on-write pointer from an owned instance of PathBuf.

This conversion does not clone or allocate.

§

impl<'a> From<PercentDecode<'a>> for Cow<'a, [u8]>

§

fn from(iter: PercentDecode<'a>) -> Cow<'a, [u8]>

Converts to this type from the input type.
§

impl<'a> From<PercentEncode<'a>> for Cow<'a, str>

§

fn from(iter: PercentEncode<'a>) -> Cow<'a, str>

Converts to this type from the input type.
1.0.0 · source§

impl<'a> From<String> for Cow<'a, str>

source§

fn from(s: String) -> Cow<'a, str>

Converts a String into an Owned variant. No heap allocation is performed, and the string is not copied.

§Example
let s = "eggplant".to_string();
let s2 = "eggplant".to_string();
assert_eq!(Cow::from(s), Cow::<'static, str>::Owned(s2));
1.8.0 · source§

impl<'a, T> From<Vec<T>> for Cow<'a, [T]>
where T: Clone,

source§

fn from(v: Vec<T>) -> Cow<'a, [T]>

Creates an Owned variant of Cow from an owned instance of Vec.

This conversion does not allocate or clone the data.

1.12.0 · source§

impl<'a, 'b> FromIterator<&'b str> for Cow<'a, str>

source§

fn from_iter<I>(it: I) -> Cow<'a, str>
where I: IntoIterator<Item = &'b str>,

Creates a value from an iterator. Read more
1.52.0 · source§

impl<'a> FromIterator<Cow<'a, OsStr>> for OsString

source§

fn from_iter<I>(iter: I) -> OsString
where I: IntoIterator<Item = Cow<'a, OsStr>>,

Creates a value from an iterator. Read more
1.80.0 · source§

impl<'a> FromIterator<Cow<'a, str>> for Box<str>

source§

fn from_iter<T>(iter: T) -> Box<str>
where T: IntoIterator<Item = Cow<'a, str>>,

Creates a value from an iterator. Read more
1.19.0 · source§

impl<'a> FromIterator<Cow<'a, str>> for String

source§

fn from_iter<I>(iter: I) -> String
where I: IntoIterator<Item = Cow<'a, str>>,

Creates a value from an iterator. Read more
1.12.0 · source§

impl<'a> FromIterator<String> for Cow<'a, str>

source§

fn from_iter<I>(it: I) -> Cow<'a, str>
where I: IntoIterator<Item = String>,

Creates a value from an iterator. Read more
1.0.0 · source§

impl<'a, T> FromIterator<T> for Cow<'a, [T]>
where T: Clone,

source§

fn from_iter<I>(it: I) -> Cow<'a, [T]>
where I: IntoIterator<Item = T>,

Creates a value from an iterator. Read more
1.12.0 · source§

impl<'a> FromIterator<char> for Cow<'a, str>

source§

fn from_iter<I>(it: I) -> Cow<'a, str>
where I: IntoIterator<Item = char>,

Creates a value from an iterator. Read more
1.0.0 · source§

impl<B> Hash for Cow<'_, B>
where B: Hash + ToOwned + ?Sized,

source§

fn hash<H>(&self, state: &mut H)
where H: Hasher,

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
source§

impl<'de, 'a, E> IntoDeserializer<'de, E> for Cow<'a, str>
where E: Error,

§

type Deserializer = CowStrDeserializer<'a, E>

The type of the deserializer being converted into.
source§

fn into_deserializer(self) -> CowStrDeserializer<'a, E>

Convert this value into a deserializer.
§

impl<'a, T> IntoVisitor for Cow<'a, T>
where T: 'a + ToOwned + ?Sized, <T as ToOwned>::Owned: IntoVisitor,

§

type AnyVisitor<R: TypeResolver> = BasicVisitor<Cow<'a, T>, R>

The visitor type used to decode SCALE encoded bytes to Self.
§

fn into_visitor<R>() -> <Cow<'a, T> as IntoVisitor>::AnyVisitor<R>
where R: TypeResolver,

A means of obtaining this visitor.
1.0.0 · source§

impl<B> Ord for Cow<'_, B>
where B: Ord + ToOwned + ?Sized,

source§

fn cmp(&self, other: &Cow<'_, B>) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 · source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 · source§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 · source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
1.0.0 · source§

impl<T, U> PartialEq<&[U]> for Cow<'_, [T]>
where T: PartialEq<U> + Clone,

source§

fn eq(&self, other: &&[U]) -> bool

Tests for self and other values to be equal, and is used by ==.
source§

fn ne(&self, other: &&[U]) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialEq<&'b OsStr> for Cow<'a, OsStr>

source§

fn eq(&self, other: &&'b OsStr) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialEq<&'b OsStr> for Cow<'a, Path>

source§

fn eq(&self, other: &&'b OsStr) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.6.0 · source§

impl<'a, 'b> PartialEq<&'b Path> for Cow<'a, Path>

source§

fn eq(&self, other: &&'b Path) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialEq<&'a Path> for Cow<'b, OsStr>

source§

fn eq(&self, other: &&'a Path) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.0.0 · source§

impl<T, U> PartialEq<&mut [U]> for Cow<'_, [T]>
where T: PartialEq<U> + Clone,

source§

fn eq(&self, other: &&mut [U]) -> bool

Tests for self and other values to be equal, and is used by ==.
source§

fn ne(&self, other: &&mut [U]) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.0.0 · source§

impl<'a, 'b> PartialEq<&'b str> for Cow<'a, str>

source§

fn eq(&self, other: &&'b str) -> bool

Tests for self and other values to be equal, and is used by ==.
source§

fn ne(&self, other: &&'b str) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for &'b OsStr

source§

fn eq(&self, other: &Cow<'a, OsStr>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for OsStr

source§

fn eq(&self, other: &Cow<'a, OsStr>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for OsString

source§

fn eq(&self, other: &Cow<'a, OsStr>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a> PartialEq<Cow<'a, OsStr>> for Path

source§

fn eq(&self, other: &Cow<'a, OsStr>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a> PartialEq<Cow<'a, OsStr>> for PathBuf

source§

fn eq(&self, other: &Cow<'a, OsStr>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialEq<Cow<'a, Path>> for &'b OsStr

source§

fn eq(&self, other: &Cow<'a, Path>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.6.0 · source§

impl<'a, 'b> PartialEq<Cow<'a, Path>> for &'b Path

source§

fn eq(&self, other: &Cow<'a, Path>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a> PartialEq<Cow<'a, Path>> for OsStr

source§

fn eq(&self, other: &Cow<'a, Path>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a> PartialEq<Cow<'a, Path>> for OsString

source§

fn eq(&self, other: &Cow<'a, Path>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.6.0 · source§

impl<'a> PartialEq<Cow<'a, Path>> for Path

source§

fn eq(&self, other: &Cow<'a, Path>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.6.0 · source§

impl<'a> PartialEq<Cow<'a, Path>> for PathBuf

source§

fn eq(&self, other: &Cow<'a, Path>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.0.0 · source§

impl<'a, 'b> PartialEq<Cow<'a, str>> for &'b str

source§

fn eq(&self, other: &Cow<'a, str>) -> bool

Tests for self and other values to be equal, and is used by ==.
source§

fn ne(&self, other: &Cow<'a, str>) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.0.0 · source§

impl<'a, 'b> PartialEq<Cow<'a, str>> for String

source§

fn eq(&self, other: &Cow<'a, str>) -> bool

Tests for self and other values to be equal, and is used by ==.
source§

fn ne(&self, other: &Cow<'a, str>) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.0.0 · source§

impl<'a, 'b> PartialEq<Cow<'a, str>> for str

source§

fn eq(&self, other: &Cow<'a, str>) -> bool

Tests for self and other values to be equal, and is used by ==.
source§

fn ne(&self, other: &Cow<'a, str>) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.0.0 · source§

impl<'a, 'b, B, C> PartialEq<Cow<'b, C>> for Cow<'a, B>
where B: PartialEq<C> + ToOwned + ?Sized, C: ToOwned + ?Sized,

source§

fn eq(&self, other: &Cow<'b, C>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialEq<Cow<'b, OsStr>> for &'a Path

source§

fn eq(&self, other: &Cow<'b, OsStr>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialEq<OsStr> for Cow<'a, OsStr>

source§

fn eq(&self, other: &OsStr) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a> PartialEq<OsStr> for Cow<'a, Path>

source§

fn eq(&self, other: &OsStr) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialEq<OsString> for Cow<'a, OsStr>

source§

fn eq(&self, other: &OsString) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a> PartialEq<OsString> for Cow<'a, Path>

source§

fn eq(&self, other: &OsString) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a> PartialEq<Path> for Cow<'a, OsStr>

source§

fn eq(&self, other: &Path) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.6.0 · source§

impl<'a> PartialEq<Path> for Cow<'a, Path>

source§

fn eq(&self, other: &Path) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a> PartialEq<PathBuf> for Cow<'a, OsStr>

source§

fn eq(&self, other: &PathBuf) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.6.0 · source§

impl<'a> PartialEq<PathBuf> for Cow<'a, Path>

source§

fn eq(&self, other: &PathBuf) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.0.0 · source§

impl<'a, 'b> PartialEq<String> for Cow<'a, str>

source§

fn eq(&self, other: &String) -> bool

Tests for self and other values to be equal, and is used by ==.
source§

fn ne(&self, other: &String) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.0.0 · source§

impl<T, U, A> PartialEq<Vec<U, A>> for Cow<'_, [T]>
where A: Allocator, T: PartialEq<U> + Clone,

source§

fn eq(&self, other: &Vec<U, A>) -> bool

Tests for self and other values to be equal, and is used by ==.
source§

fn ne(&self, other: &Vec<U, A>) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
§

impl<T, U, A> PartialEq<Vec<U, A>> for Cow<'_, [T]>
where A: Allocator, T: PartialEq<U> + Clone,

§

fn eq(&self, other: &Vec<U, A>) -> bool

Tests for self and other values to be equal, and is used by ==.
§

fn ne(&self, other: &Vec<U, A>) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.0.0 · source§

impl<'a, 'b> PartialEq<str> for Cow<'a, str>

source§

fn eq(&self, other: &str) -> bool

Tests for self and other values to be equal, and is used by ==.
source§

fn ne(&self, other: &str) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
1.8.0 · source§

impl<'a, 'b> PartialOrd<&'b OsStr> for Cow<'a, OsStr>

source§

fn partial_cmp(&self, other: &&'b OsStr) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<&'b OsStr> for Cow<'a, Path>

source§

fn partial_cmp(&self, other: &&'b OsStr) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<&'b Path> for Cow<'a, Path>

source§

fn partial_cmp(&self, other: &&'b Path) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<&'a Path> for Cow<'b, OsStr>

source§

fn partial_cmp(&self, other: &&'a Path) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<Cow<'a, OsStr>> for &'b OsStr

source§

fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<Cow<'a, OsStr>> for OsStr

source§

fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<Cow<'a, OsStr>> for OsString

source§

fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<Cow<'a, OsStr>> for Path

source§

fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<Cow<'a, OsStr>> for PathBuf

source§

fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<Cow<'a, Path>> for &'b OsStr

source§

fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<Cow<'a, Path>> for &'b Path

source§

fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<Cow<'a, Path>> for OsStr

source§

fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<Cow<'a, Path>> for OsString

source§

fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<Cow<'a, Path>> for Path

source§

fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<Cow<'a, Path>> for PathBuf

source§

fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<Cow<'b, OsStr>> for &'a Path

source§

fn partial_cmp(&self, other: &Cow<'b, OsStr>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<OsStr> for Cow<'a, OsStr>

source§

fn partial_cmp(&self, other: &OsStr) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<OsStr> for Cow<'a, Path>

source§

fn partial_cmp(&self, other: &OsStr) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a, 'b> PartialOrd<OsString> for Cow<'a, OsStr>

source§

fn partial_cmp(&self, other: &OsString) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<OsString> for Cow<'a, Path>

source§

fn partial_cmp(&self, other: &OsString) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<Path> for Cow<'a, OsStr>

source§

fn partial_cmp(&self, other: &Path) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<Path> for Cow<'a, Path>

source§

fn partial_cmp(&self, other: &Path) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<PathBuf> for Cow<'a, OsStr>

source§

fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.8.0 · source§

impl<'a> PartialOrd<PathBuf> for Cow<'a, Path>

source§

fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
1.0.0 · source§

impl<'a, B> PartialOrd for Cow<'a, B>
where B: PartialOrd + ToOwned + ?Sized,

source§

fn partial_cmp(&self, other: &Cow<'a, B>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<'a> Replacer for &'a Cow<'a, [u8]>

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fn replace_append(&mut self, caps: &Captures<'_>, dst: &mut Vec<u8>)

Appends possibly empty data to dst to replace the current match. Read more
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fn no_expansion(&mut self) -> Option<Cow<'_, [u8]>>

Return a fixed unchanging replacement byte string. Read more
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fn by_ref<'r>(&'r mut self) -> ReplacerRef<'r, Self>

Returns a type that implements Replacer, but that borrows and wraps this Replacer. Read more
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impl<'a> Replacer for &'a Cow<'a, str>

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fn replace_append(&mut self, caps: &Captures<'_>, dst: &mut String)

Appends possibly empty data to dst to replace the current match. Read more
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fn no_expansion(&mut self) -> Option<Cow<'_, str>>

Return a fixed unchanging replacement string. Read more
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fn by_ref<'r>(&'r mut self) -> ReplacerRef<'r, Self>

Returns a type that implements Replacer, but that borrows and wraps this Replacer. Read more
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impl<'a> Replacer for Cow<'a, [u8]>

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fn replace_append(&mut self, caps: &Captures<'_>, dst: &mut Vec<u8>)

Appends possibly empty data to dst to replace the current match. Read more
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fn no_expansion(&mut self) -> Option<Cow<'_, [u8]>>

Return a fixed unchanging replacement byte string. Read more
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fn by_ref<'r>(&'r mut self) -> ReplacerRef<'r, Self>

Returns a type that implements Replacer, but that borrows and wraps this Replacer. Read more
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impl<'a> Replacer for Cow<'a, str>

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fn replace_append(&mut self, caps: &Captures<'_>, dst: &mut String)

Appends possibly empty data to dst to replace the current match. Read more
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fn no_expansion(&mut self) -> Option<Cow<'_, str>>

Return a fixed unchanging replacement string. Read more
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fn by_ref<'r>(&'r mut self) -> ReplacerRef<'r, Self>

Returns a type that implements Replacer, but that borrows and wraps this Replacer. Read more
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impl<'a, T> Serialize for Cow<'a, T>
where T: Serialize + ToOwned + ?Sized,

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fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl<T> TypeInfo for Cow<'static, T>
where T: ToOwned + TypeInfo + 'static + ?Sized,

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type Identity = Cow<'static, T>

The type identifying for which type info is provided. Read more
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fn type_info() -> Type

Returns the static type identifier for Self.
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impl<B> DerefPure for Cow<'_, B>
where B: ToOwned + ?Sized, <B as ToOwned>::Owned: Borrow<B>,

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impl<'a, T> EncodeLike<T> for Cow<'a, T>
where T: ToOwned + Encode,

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impl<'a, T> EncodeLike for Cow<'a, T>
where T: ToOwned + Encode + ?Sized,

1.0.0 · source§

impl<B> Eq for Cow<'_, B>
where B: Eq + ToOwned + ?Sized,

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impl<'a, T> WrapperTypeEncode for Cow<'a, T>
where T: ToOwned + ?Sized,

Auto Trait Implementations§

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impl<'a, B> Freeze for Cow<'a, B>
where <B as ToOwned>::Owned: Freeze, B: ?Sized,

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impl<'a, B> RefUnwindSafe for Cow<'a, B>

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impl<'a, B> Send for Cow<'a, B>
where <B as ToOwned>::Owned: Send, B: Sync + ?Sized,

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impl<'a, B> Sync for Cow<'a, B>
where <B as ToOwned>::Owned: Sync, B: Sync + ?Sized,

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impl<'a, B> Unpin for Cow<'a, B>
where <B as ToOwned>::Owned: Unpin, B: ?Sized,

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impl<'a, B> UnwindSafe for Cow<'a, B>
where <B as ToOwned>::Owned: UnwindSafe, B: RefUnwindSafe + ?Sized,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<A, T> AsBits<T> for A
where A: AsRef<[T]>, T: BitStore,

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fn as_bits<O>(&self) -> &BitSlice<T, O>
where O: BitOrder,

Views self as an immutable bit-slice region with the O ordering.
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fn try_as_bits<O>(&self) -> Result<&BitSlice<T, O>, BitSpanError<T>>
where O: BitOrder,

Attempts to view self as an immutable bit-slice region with the O ordering. Read more
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impl<T, U> AsByteSlice<T> for U
where T: ToByteSlice, U: AsRef<[T]> + ?Sized,

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fn as_byte_slice(&self) -> &[u8]

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impl<U> AsSliceOf for U
where U: AsRef<[u8]> + ?Sized,

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fn as_slice_of<T>(&self) -> Result<&[T], Error>
where T: FromByteSlice,

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CallHasher for T
where T: Hash + ?Sized,

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default fn get_hash<H, B>(value: &H, build_hasher: &B) -> u64
where H: Hash + ?Sized, B: BuildHasher,

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impl<T> CheckedConversion for T

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fn checked_from<T>(t: T) -> Option<Self>
where Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more
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fn checked_into<T>(self) -> Option<T>
where Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more
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impl<T> Clear for T
where T: Default + Eq + PartialEq,

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fn is_clear(&self) -> bool

True iff no bits are set.
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fn clear() -> T

Return the value of Self that is clear.
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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impl<T> Conv for T

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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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impl<T> DecodeAll for T
where T: Decode,

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fn decode_all(input: &mut &[u8]) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more
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impl<T> DecodeAsType for T
where T: IntoVisitor,

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fn decode_as_type_maybe_compact<R>( input: &mut &[u8], type_id: <R as TypeResolver>::TypeId, types: &R, is_compact: bool, ) -> Result<T, Error>
where R: TypeResolver,

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fn decode_as_type<R>( input: &mut &[u8], type_id: <R as TypeResolver>::TypeId, types: &R, ) -> Result<Self, Error>
where R: TypeResolver,

Given some input bytes, a type_id, and type registry, attempt to decode said bytes into Self. Implementations should modify the &mut reference to the bytes such that any bytes not used in the course of decoding are still pointed to after decoding is complete.
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impl<T> DecodeLimit for T
where T: Decode,

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fn decode_all_with_depth_limit( limit: u32, input: &mut &[u8], ) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more
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fn decode_with_depth_limit<I>(limit: u32, input: &mut I) -> Result<T, Error>
where I: Input,

Decode Self with the given maximum recursion depth and advance input by the number of bytes consumed. Read more
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impl<T> DecodeWithMetadata for T
where T: DecodeAsType,

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fn decode_with_metadata( bytes: &mut &[u8], type_id: u32, metadata: &Metadata, ) -> Result<T, Error>

Given some metadata and a type ID, attempt to SCALE decode the provided bytes into Self.
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<T, X> Encode for X
where T: Encode + ?Sized, X: WrapperTypeEncode<Target = T>,

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fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding. Read more
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fn using_encoded<R, F>(&self, f: F) -> R
where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.
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fn encode(&self) -> Vec<u8>

Convert self to an owned vector.
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fn encode_to<W>(&self, dest: &mut W)
where W: Output + ?Sized,

Convert self to a slice and append it to the destination.
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fn encoded_size(&self) -> usize

Calculates the encoded size. Read more
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impl<T> EncodeWithMetadata for T
where T: EncodeAsType,

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fn encode_with_metadata( &self, type_id: u32, metadata: &Metadata, bytes: &mut Vec<u8>, ) -> Result<(), Error>

SCALE encode this type to bytes, possibly with the help of metadata.

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> FmtForward for T

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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromBits<T> for T

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fn from_bits(other: T) -> T

Convert other to Self, preserving bitwise representation
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T, Outer> IsWrappedBy<Outer> for T
where Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

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fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

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fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

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impl<T> KeyedVec for T
where T: Codec,

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fn to_keyed_vec(&self, prepend_key: &[u8]) -> Vec<u8>

Return an encoding of Self prepended by given slice.
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impl<S> ParseFormatted for S
where S: AsRef<str>,

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fn parse_formatted<F, N>(&self, format: &F) -> Result<N, Error>
where F: Format, N: FromFormattedStr,

Converts self (typically a formatted string) into a number (see Examples above).
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impl<T> Pipe for T
where T: ?Sized,

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fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more
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fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more
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fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R
where R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more
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fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
where Self: Borrow<B>, B: 'a + ?Sized, R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more
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fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R, ) -> R
where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
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fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.
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fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.
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fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.
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fn pipe_deref_mut<'a, T, R>( &'a mut self, func: impl FnOnce(&'a mut T) -> R, ) -> R
where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> SaturatedConversion for T

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fn saturated_from<T>(t: T) -> Self
where Self: UniqueSaturatedFrom<T>,

Convert from a value of T into an equivalent instance of Self. Read more
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fn saturated_into<T>(self) -> T
where Self: UniqueSaturatedInto<T>,

Consume self to return an equivalent value of T. Read more
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impl<T> Tap for T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more
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fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more
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fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Immutable access to the Borrow<B> of a value. Read more
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fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Mutable access to the BorrowMut<B> of a value. Read more
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fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more
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fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more
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fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more
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fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more
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fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.
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fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.
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fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.
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fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.
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fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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impl<T> ToHex for T
where T: AsRef<[u8]>,

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fn encode_hex<U>(&self) -> U
where U: FromIterator<char>,

Encode the hex strict representing self into the result. Lower case letters are used (e.g. f9b4ca)
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fn encode_hex_upper<U>(&self) -> U
where U: FromIterator<char>,

Encode the hex strict representing self into the result. Upper case letters are used (e.g. F9B4CA)
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T> TryConv for T

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fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<S, T> UncheckedInto<T> for S
where T: UncheckedFrom<S>,

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fn unchecked_into(self) -> T

The counterpart to unchecked_from.
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impl<T, S> UniqueSaturatedInto<T> for S
where T: Bounded, S: TryInto<T>,

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fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<S> Codec for S
where S: Decode + Encode,

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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

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impl<T> EncodeLike<&&T> for T
where T: Encode,

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impl<T> EncodeLike<&T> for T
where T: Encode,

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impl<T> EncodeLike<&mut T> for T
where T: Encode,

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impl<T> EncodeLike<Arc<T>> for T
where T: Encode,

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impl<T> EncodeLike<Box<T>> for T
where T: Encode,

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impl<'a, T> EncodeLike<Cow<'a, T>> for T
where T: ToOwned + Encode,

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impl<T> EncodeLike<Rc<T>> for T
where T: Encode,

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impl<T> Error for T
where T: 'static + Debug + Display + Send + Sync,

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impl<T> Formattable for T
where T: Deref, <T as Deref>::Target: Formattable,

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impl<S> FullCodec for S
where S: Decode + FullEncode,

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impl<S> FullEncode for S
where S: Encode + EncodeLike,

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impl<T> JsonSchemaMaybe for T

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impl<T> MaybeDebug for T
where T: Debug,

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impl<T> MaybeDisplay for T
where T: Display,

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impl<T> MaybeHash for T
where T: Hash,

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impl<T> MaybeHash for T
where T: Hash,

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impl<T> MaybeRefUnwindSafe for T
where T: RefUnwindSafe,

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impl<T> MaybeSend for T
where T: Send,

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impl<T> MaybeSend for T
where T: Send,

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impl<T> MaybeSerialize for T
where T: Serialize,

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impl<T> MaybeSerializeDeserialize for T

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impl<T> Member for T
where T: Send + Sync + Debug + Eq + PartialEq + Clone + 'static,

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impl<T> StaticTypeInfo for T
where T: TypeInfo + 'static,

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impl<T> TypeId for T
where T: Clone + Debug + Default,