Struct gstd::prelude::num::NonZeroI32

1.34.0 · source ·
pub struct NonZeroI32(/* private fields */);
Expand description

An integer that is known not to equal zero.

This enables some memory layout optimization. For example, Option<NonZeroI32> is the same size as i32:

use std::mem::size_of;
assert_eq!(size_of::<Option<core::num::NonZeroI32>>(), size_of::<i32>());

§Layout

NonZeroI32 is guaranteed to have the same layout and bit validity as i32 with the exception that 0 is not a valid instance. Option<NonZeroI32> is guaranteed to be compatible with i32, including in FFI.

Thanks to the null pointer optimization, NonZeroI32 and Option<NonZeroI32> are guaranteed to have the same size and alignment:

use std::num::NonZeroI32;

assert_eq!(size_of::<NonZeroI32>(), size_of::<Option<NonZeroI32>>());
assert_eq!(align_of::<NonZeroI32>(), align_of::<Option<NonZeroI32>>());

Implementations§

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impl NonZeroI32

const: 1.34.0 · source

pub const unsafe fn new_unchecked(n: i32) -> NonZeroI32

Creates a non-zero without checking whether the value is non-zero. This results in undefined behaviour if the value is zero.

§Safety

The value must not be zero.

const: 1.47.0 · source

pub const fn new(n: i32) -> Option<NonZeroI32>

Creates a non-zero if the given value is not zero.

source

pub unsafe fn from_mut_unchecked(n: &mut i32) -> &mut NonZeroI32

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

Converts a primitive mutable reference to a non-zero mutable reference without checking whether the referenced value is non-zero. This results in undefined behavior if *n is zero.

§Safety

The referenced value must not be currently zero.

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pub fn from_mut(n: &mut i32) -> Option<&mut NonZeroI32>

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

Converts a primitive mutable reference to a non-zero mutable reference if the referenced integer is not zero.

const: 1.34.0 · source

pub const fn get(self) -> i32

Returns the value as a primitive type.

1.67.0 · source

pub const BITS: u32 = 32u32

The size of this non-zero integer type in bits.

This value is equal to i32::BITS.

§Examples

assert_eq!(NonZeroI32::BITS, i32::BITS);
1.53.0 (const: 1.53.0) · source

pub const fn leading_zeros(self) -> u32

Returns the number of leading zeros in the binary representation of self.

On many architectures, this function can perform better than leading_zeros() on the underlying integer type, as special handling of zero can be avoided.

§Examples

Basic usage:

let n = std::num::NonZeroI32::new(-1i32).unwrap();

assert_eq!(n.leading_zeros(), 0);
1.53.0 (const: 1.53.0) · source

pub const fn trailing_zeros(self) -> u32

Returns the number of trailing zeros in the binary representation of self.

On many architectures, this function can perform better than trailing_zeros() on the underlying integer type, as special handling of zero can be avoided.

§Examples

Basic usage:

let n = std::num::NonZeroI32::new(0b0101000).unwrap();

assert_eq!(n.trailing_zeros(), 3);
const: unstable · source

pub fn count_ones(self) -> NonZeroU32

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

Returns the number of ones in the binary representation of self.

§Examples

Basic usage:

#![feature(non_zero_count_ones)]

let one = num::NonZeroU32::new(1)?;
let three = num::NonZeroU32::new(3)?;
let a = NonZeroI32::new(0b100_0000)?;
let b = NonZeroI32::new(0b100_0011)?;

assert_eq!(a.count_ones(), one);
assert_eq!(b.count_ones(), three);
1.70.0 · source

pub const MIN: NonZeroI32 = _

The smallest value that can be represented by this non-zero integer type, equal to i32::MIN.

Note: While most integer types are defined for every whole number between MIN and MAX, signed non-zero integers are a special case. They have a “gap” at 0.

§Examples
assert_eq!(NonZeroI32::MIN.get(), i32::MIN);
1.70.0 · source

pub const MAX: NonZeroI32 = _

The largest value that can be represented by this non-zero integer type, equal to i32::MAX.

Note: While most integer types are defined for every whole number between MIN and MAX, signed non-zero integers are a special case. They have a “gap” at 0.

§Examples
assert_eq!(NonZeroI32::MAX.get(), i32::MAX);
1.64.0 (const: 1.64.0) · source

pub const fn abs(self) -> NonZeroI32

Computes the absolute value of self. See i32::abs for documentation on overflow behaviour.

§Example
let pos = NonZeroI32::new(1)?;
let neg = NonZeroI32::new(-1)?;

assert_eq!(pos, pos.abs());
assert_eq!(pos, neg.abs());
1.64.0 (const: 1.64.0) · source

pub const fn checked_abs(self) -> Option<NonZeroI32>

Checked absolute value. Checks for overflow and returns None if self == NonZeroI32::MIN. The result cannot be zero.

§Example
let pos = NonZeroI32::new(1)?;
let neg = NonZeroI32::new(-1)?;
let min = NonZeroI32::new(i32::MIN)?;

assert_eq!(Some(pos), neg.checked_abs());
assert_eq!(None, min.checked_abs());
1.64.0 (const: 1.64.0) · source

pub const fn overflowing_abs(self) -> (NonZeroI32, bool)

Computes the absolute value of self, with overflow information, see i32::overflowing_abs.

§Example
let pos = NonZeroI32::new(1)?;
let neg = NonZeroI32::new(-1)?;
let min = NonZeroI32::new(i32::MIN)?;

assert_eq!((pos, false), pos.overflowing_abs());
assert_eq!((pos, false), neg.overflowing_abs());
assert_eq!((min, true), min.overflowing_abs());
1.64.0 (const: 1.64.0) · source

pub const fn saturating_abs(self) -> NonZeroI32

Saturating absolute value, see i32::saturating_abs.

§Example
let pos = NonZeroI32::new(1)?;
let neg = NonZeroI32::new(-1)?;
let min = NonZeroI32::new(i32::MIN)?;
let min_plus = NonZeroI32::new(i32::MIN + 1)?;
let max = NonZeroI32::new(i32::MAX)?;

assert_eq!(pos, pos.saturating_abs());
assert_eq!(pos, neg.saturating_abs());
assert_eq!(max, min.saturating_abs());
assert_eq!(max, min_plus.saturating_abs());
1.64.0 (const: 1.64.0) · source

pub const fn wrapping_abs(self) -> NonZeroI32

Wrapping absolute value, see i32::wrapping_abs.

§Example
let pos = NonZeroI32::new(1)?;
let neg = NonZeroI32::new(-1)?;
let min = NonZeroI32::new(i32::MIN)?;

assert_eq!(pos, pos.wrapping_abs());
assert_eq!(pos, neg.wrapping_abs());
assert_eq!(min, min.wrapping_abs());
assert_eq!(max, (-max).wrapping_abs());
1.64.0 (const: 1.64.0) · source

pub const fn unsigned_abs(self) -> NonZeroU32

Computes the absolute value of self without any wrapping or panicking.

§Example

let u_pos = NonZeroU32::new(1)?;
let i_pos = NonZeroI32::new(1)?;
let i_neg = NonZeroI32::new(-1)?;
let i_min = NonZeroI32::new(i32::MIN)?;
let u_max = NonZeroU32::new(u32::MAX / 2 + 1)?;

assert_eq!(u_pos, i_pos.unsigned_abs());
assert_eq!(u_pos, i_neg.unsigned_abs());
assert_eq!(u_max, i_min.unsigned_abs());
1.71.0 (const: 1.71.0) · source

pub const fn is_positive(self) -> bool

Returns true if self is positive and false if the number is negative.

§Example
let pos_five = NonZeroI32::new(5)?;
let neg_five = NonZeroI32::new(-5)?;

assert!(pos_five.is_positive());
assert!(!neg_five.is_positive());
1.71.0 (const: 1.71.0) · source

pub const fn is_negative(self) -> bool

Returns true if self is negative and false if the number is positive.

§Example
let pos_five = NonZeroI32::new(5)?;
let neg_five = NonZeroI32::new(-5)?;

assert!(neg_five.is_negative());
assert!(!pos_five.is_negative());
1.71.0 (const: 1.71.0) · source

pub const fn checked_neg(self) -> Option<NonZeroI32>

Checked negation. Computes -self, returning None if self == NonZeroI32::MIN.

§Example
let pos_five = NonZeroI32::new(5)?;
let neg_five = NonZeroI32::new(-5)?;
let min = NonZeroI32::new(i32::MIN)?;

assert_eq!(pos_five.checked_neg(), Some(neg_five));
assert_eq!(min.checked_neg(), None);
1.71.0 (const: 1.71.0) · source

pub const fn overflowing_neg(self) -> (NonZeroI32, bool)

Negates self, overflowing if this is equal to the minimum value.

See i32::overflowing_neg for documentation on overflow behaviour.

§Example
let pos_five = NonZeroI32::new(5)?;
let neg_five = NonZeroI32::new(-5)?;
let min = NonZeroI32::new(i32::MIN)?;

assert_eq!(pos_five.overflowing_neg(), (neg_five, false));
assert_eq!(min.overflowing_neg(), (min, true));
1.71.0 (const: 1.71.0) · source

pub const fn saturating_neg(self) -> NonZeroI32

Saturating negation. Computes -self, returning NonZeroI32::MAX if self == NonZeroI32::MIN instead of overflowing.

§Example
let pos_five = NonZeroI32::new(5)?;
let neg_five = NonZeroI32::new(-5)?;
let min = NonZeroI32::new(i32::MIN)?;
let min_plus_one = NonZeroI32::new(i32::MIN + 1)?;
let max = NonZeroI32::new(i32::MAX)?;

assert_eq!(pos_five.saturating_neg(), neg_five);
assert_eq!(min.saturating_neg(), max);
assert_eq!(max.saturating_neg(), min_plus_one);
1.71.0 (const: 1.71.0) · source

pub const fn wrapping_neg(self) -> NonZeroI32

Wrapping (modular) negation. Computes -self, wrapping around at the boundary of the type.

See i32::wrapping_neg for documentation on overflow behaviour.

§Example
let pos_five = NonZeroI32::new(5)?;
let neg_five = NonZeroI32::new(-5)?;
let min = NonZeroI32::new(i32::MIN)?;

assert_eq!(pos_five.wrapping_neg(), neg_five);
assert_eq!(min.wrapping_neg(), min);
1.64.0 (const: 1.64.0) · source

pub const fn checked_mul(self, other: NonZeroI32) -> Option<NonZeroI32>

Multiplies two non-zero integers together. Checks for overflow and returns None on overflow. As a consequence, the result cannot wrap to zero.

§Examples
let two = NonZeroI32::new(2)?;
let four = NonZeroI32::new(4)?;
let max = NonZeroI32::new(i32::MAX)?;

assert_eq!(Some(four), two.checked_mul(two));
assert_eq!(None, max.checked_mul(two));
1.64.0 (const: 1.64.0) · source

pub const fn saturating_mul(self, other: NonZeroI32) -> NonZeroI32

Multiplies two non-zero integers together. Return NonZeroI32::MAX on overflow.

§Examples
let two = NonZeroI32::new(2)?;
let four = NonZeroI32::new(4)?;
let max = NonZeroI32::new(i32::MAX)?;

assert_eq!(four, two.saturating_mul(two));
assert_eq!(max, four.saturating_mul(max));
source

pub const unsafe fn unchecked_mul(self, other: NonZeroI32) -> NonZeroI32

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

Multiplies two non-zero integers together, assuming overflow cannot occur. Overflow is unchecked, and it is undefined behaviour to overflow even if the result would wrap to a non-zero value. The behaviour is undefined as soon as self * rhs > i32::MAX, or self * rhs < i32::MIN.

§Examples
#![feature(nonzero_ops)]

let two = NonZeroI32::new(2)?;
let four = NonZeroI32::new(4)?;

assert_eq!(four, unsafe { two.unchecked_mul(two) });
1.64.0 (const: 1.64.0) · source

pub const fn checked_pow(self, other: u32) -> Option<NonZeroI32>

Raises non-zero value to an integer power. Checks for overflow and returns None on overflow. As a consequence, the result cannot wrap to zero.

§Examples
let three = NonZeroI32::new(3)?;
let twenty_seven = NonZeroI32::new(27)?;
let half_max = NonZeroI32::new(i32::MAX / 2)?;

assert_eq!(Some(twenty_seven), three.checked_pow(3));
assert_eq!(None, half_max.checked_pow(3));
1.64.0 (const: 1.64.0) · source

pub const fn saturating_pow(self, other: u32) -> NonZeroI32

Raise non-zero value to an integer power. Return NonZeroI32::MIN or NonZeroI32::MAX on overflow.

§Examples
let three = NonZeroI32::new(3)?;
let twenty_seven = NonZeroI32::new(27)?;
let max = NonZeroI32::new(i32::MAX)?;

assert_eq!(twenty_seven, three.saturating_pow(3));
assert_eq!(max, max.saturating_pow(3));

Trait Implementations§

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impl AsBytes for NonZeroI32

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

Gets the bytes of this value. Read more
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fn write_to(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to bytes. Read more
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fn write_to_prefix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the prefix of bytes. Read more
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fn write_to_suffix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the suffix of bytes. Read more
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impl Binary for NonZeroI32

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

Formats the value using the given formatter.
1.45.0 · source§

impl BitOr<NonZeroI32> for i32

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type Output = NonZeroI32

The resulting type after applying the | operator.
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fn bitor(self, rhs: NonZeroI32) -> <i32 as BitOr<NonZeroI32>>::Output

Performs the | operation. Read more
1.45.0 · source§

impl BitOr<i32> for NonZeroI32

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type Output = NonZeroI32

The resulting type after applying the | operator.
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fn bitor(self, rhs: i32) -> <NonZeroI32 as BitOr<i32>>::Output

Performs the | operation. Read more
1.45.0 · source§

impl BitOr for NonZeroI32

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type Output = NonZeroI32

The resulting type after applying the | operator.
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fn bitor(self, rhs: NonZeroI32) -> <NonZeroI32 as BitOr>::Output

Performs the | operation. Read more
1.45.0 · source§

impl BitOrAssign<i32> for NonZeroI32

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fn bitor_assign(&mut self, rhs: i32)

Performs the |= operation. Read more
1.45.0 · source§

impl BitOrAssign for NonZeroI32

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fn bitor_assign(&mut self, rhs: NonZeroI32)

Performs the |= operation. Read more
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impl Clone for NonZeroI32

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fn clone(&self) -> NonZeroI32

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for NonZeroI32

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

Formats the value using the given formatter. Read more
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impl Decode for NonZeroI32

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fn decode<I>(input: &mut I) -> Result<NonZeroI32, 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
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impl<'de> Deserialize<'de> for NonZeroI32

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fn deserialize<D>( deserializer: D ) -> Result<NonZeroI32, <D as Deserializer<'de>>::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Display for NonZeroI32

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

Formats the value using the given formatter. Read more
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impl Encode for NonZeroI32

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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 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 encode(&self) -> Vec<u8>

Convert self to an owned vector.
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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 encoded_size(&self) -> usize

Calculates the encoded size. Read more
1.41.0 · source§

impl From<NonZeroI16> for NonZeroI32

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fn from(small: NonZeroI16) -> NonZeroI32

Converts NonZeroI16 to NonZeroI32 losslessly.

1.41.0 · source§

impl From<NonZeroI32> for NonZeroI128

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fn from(small: NonZeroI32) -> NonZeroI128

Converts NonZeroI32 to NonZeroI128 losslessly.

1.41.0 · source§

impl From<NonZeroI32> for NonZeroI64

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fn from(small: NonZeroI32) -> NonZeroI64

Converts NonZeroI32 to NonZeroI64 losslessly.

1.31.0 · source§

impl From<NonZeroI32> for i32

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fn from(nonzero: NonZeroI32) -> i32

Converts a NonZeroI32 into an i32

1.41.0 · source§

impl From<NonZeroI8> for NonZeroI32

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fn from(small: NonZeroI8) -> NonZeroI32

Converts NonZeroI8 to NonZeroI32 losslessly.

1.41.0 · source§

impl From<NonZeroU16> for NonZeroI32

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fn from(small: NonZeroU16) -> NonZeroI32

Converts NonZeroU16 to NonZeroI32 losslessly.

1.41.0 · source§

impl From<NonZeroU8> for NonZeroI32

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fn from(small: NonZeroU8) -> NonZeroI32

Converts NonZeroU8 to NonZeroI32 losslessly.

1.35.0 · source§

impl FromStr for NonZeroI32

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type Err = ParseIntError

The associated error which can be returned from parsing.
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fn from_str(src: &str) -> Result<NonZeroI32, <NonZeroI32 as FromStr>::Err>

Parses a string s to return a value of this type. Read more
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impl Hash for NonZeroI32

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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
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impl LowerHex for NonZeroI32

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

Formats the value using the given formatter.
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impl MaxEncodedLen for NonZeroI32

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fn max_encoded_len() -> usize

Upper bound, in bytes, of the maximum encoded size of this item.
1.71.0 · source§

impl Neg for &NonZeroI32

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type Output = <NonZeroI32 as Neg>::Output

The resulting type after applying the - operator.
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fn neg(self) -> <NonZeroI32 as Neg>::Output

Performs the unary - operation. Read more
1.71.0 · source§

impl Neg for NonZeroI32

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type Output = NonZeroI32

The resulting type after applying the - operator.
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fn neg(self) -> NonZeroI32

Performs the unary - operation. Read more
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impl Octal for NonZeroI32

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

Formats the value using the given formatter.
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impl Ord for NonZeroI32

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fn cmp(&self, other: &NonZeroI32) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: NonZeroI32) -> NonZeroI32

Compares and returns the maximum of two values. Read more
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fn min(self, other: NonZeroI32) -> NonZeroI32

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: NonZeroI32, max: NonZeroI32) -> NonZeroI32

Restrict a value to a certain interval. Read more
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impl PartialEq for NonZeroI32

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fn eq(&self, other: &NonZeroI32) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &NonZeroI32) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for NonZeroI32

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fn partial_cmp(&self, other: &NonZeroI32) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &NonZeroI32) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &NonZeroI32) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &NonZeroI32) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &NonZeroI32) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Serialize for NonZeroI32

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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
1.49.0 · source§

impl TryFrom<NonZeroI128> for NonZeroI32

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fn try_from( value: NonZeroI128 ) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroI128>>::Error>

Attempts to convert NonZeroI128 to NonZeroI32.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroI32> for NonZeroI16

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fn try_from( value: NonZeroI32 ) -> Result<NonZeroI16, <NonZeroI16 as TryFrom<NonZeroI32>>::Error>

Attempts to convert NonZeroI32 to NonZeroI16.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroI32> for NonZeroI8

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fn try_from( value: NonZeroI32 ) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroI32>>::Error>

Attempts to convert NonZeroI32 to NonZeroI8.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroI32> for NonZeroIsize

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fn try_from( value: NonZeroI32 ) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroI32>>::Error>

Attempts to convert NonZeroI32 to NonZeroIsize.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroI32> for NonZeroU128

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fn try_from( value: NonZeroI32 ) -> Result<NonZeroU128, <NonZeroU128 as TryFrom<NonZeroI32>>::Error>

Attempts to convert NonZeroI32 to NonZeroU128.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroI32> for NonZeroU16

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fn try_from( value: NonZeroI32 ) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroI32>>::Error>

Attempts to convert NonZeroI32 to NonZeroU16.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroI32> for NonZeroU32

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fn try_from( value: NonZeroI32 ) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI32>>::Error>

Attempts to convert NonZeroI32 to NonZeroU32.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroI32> for NonZeroU64

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fn try_from( value: NonZeroI32 ) -> Result<NonZeroU64, <NonZeroU64 as TryFrom<NonZeroI32>>::Error>

Attempts to convert NonZeroI32 to NonZeroU64.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroI32> for NonZeroU8

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fn try_from( value: NonZeroI32 ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroI32>>::Error>

Attempts to convert NonZeroI32 to NonZeroU8.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroI32> for NonZeroUsize

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fn try_from( value: NonZeroI32 ) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI32>>::Error>

Attempts to convert NonZeroI32 to NonZeroUsize.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroI64> for NonZeroI32

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fn try_from( value: NonZeroI64 ) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroI64>>::Error>

Attempts to convert NonZeroI64 to NonZeroI32.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroIsize> for NonZeroI32

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fn try_from( value: NonZeroIsize ) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroI32.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroU128> for NonZeroI32

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fn try_from( value: NonZeroU128 ) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroU128>>::Error>

Attempts to convert NonZeroU128 to NonZeroI32.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroU32> for NonZeroI32

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fn try_from( value: NonZeroU32 ) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroU32>>::Error>

Attempts to convert NonZeroU32 to NonZeroI32.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroU64> for NonZeroI32

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fn try_from( value: NonZeroU64 ) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroU64>>::Error>

Attempts to convert NonZeroU64 to NonZeroI32.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

impl TryFrom<NonZeroUsize> for NonZeroI32

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fn try_from( value: NonZeroUsize ) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroUsize>>::Error>

Attempts to convert NonZeroUsize to NonZeroI32.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
1.46.0 · source§

impl TryFrom<i32> for NonZeroI32

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fn try_from( value: i32 ) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<i32>>::Error>

Attempts to convert i32 to NonZeroI32.

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type Error = TryFromIntError

The type returned in the event of a conversion error.
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impl TypeInfo for NonZeroI32

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type Identity = NonZeroI32

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 UpperHex for NonZeroI32

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

Formats the value using the given formatter.
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impl ConstEncodedLen for NonZeroI32

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impl Copy for NonZeroI32

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impl Eq for NonZeroI32

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impl StructuralEq for NonZeroI32

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impl StructuralPartialEq for NonZeroI32

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impl<T> Any for T
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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> Conv for T

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fn conv<T>(self) -> T
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impl<T> DecodeAll for T
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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> DecodeLimit for T
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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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where I: Input,

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fn equivalent(&self, key: &K) -> bool

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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, 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> 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<T> Pipe for T
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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,

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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,

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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,

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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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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> 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
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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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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
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Immutable access to the Deref::Target of a value. Read more
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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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Calls .tap_mut() only in debug builds, and is erased in release builds.
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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
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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> ToOwned for T
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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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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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where Self: TryInto<T>,

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impl<T, U> TryFrom<U> for T
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type Error = Infallible

The type returned in the event of a conversion error.
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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

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Performs the conversion.
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fn vzip(self) -> V

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impl<T> JsonSchemaMaybe for T

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