Struct gclient::ext::sp_core::bounded::alloc::collections::BinaryHeap

1.0.0 · source ·
pub struct BinaryHeap<T, A = Global>
where A: Allocator,
{ /* private fields */ }
Expand description

A priority queue implemented with a binary heap.

This will be a max-heap.

It is a logic error for an item to be modified in such a way that the item’s ordering relative to any other item, as determined by the Ord trait, changes while it is in the heap. This is normally only possible through interior mutability, global state, I/O, or unsafe code. The behavior resulting from such a logic error is not specified, but will be encapsulated to the BinaryHeap that observed the logic error and not result in undefined behavior. This could include panics, incorrect results, aborts, memory leaks, and non-termination.

As long as no elements change their relative order while being in the heap as described above, the API of BinaryHeap guarantees that the heap invariant remains intact i.e. its methods all behave as documented. For example if a method is documented as iterating in sorted order, that’s guaranteed to work as long as elements in the heap have not changed order, even in the presence of closures getting unwinded out of, iterators getting leaked, and similar foolishness.

§Examples

use std::collections::BinaryHeap;

// Type inference lets us omit an explicit type signature (which
// would be `BinaryHeap<i32>` in this example).
let mut heap = BinaryHeap::new();

// We can use peek to look at the next item in the heap. In this case,
// there's no items in there yet so we get None.
assert_eq!(heap.peek(), None);

// Let's add some scores...
heap.push(1);
heap.push(5);
heap.push(2);

// Now peek shows the most important item in the heap.
assert_eq!(heap.peek(), Some(&5));

// We can check the length of a heap.
assert_eq!(heap.len(), 3);

// We can iterate over the items in the heap, although they are returned in
// a random order.
for x in &heap {
    println!("{x}");
}

// If we instead pop these scores, they should come back in order.
assert_eq!(heap.pop(), Some(5));
assert_eq!(heap.pop(), Some(2));
assert_eq!(heap.pop(), Some(1));
assert_eq!(heap.pop(), None);

// We can clear the heap of any remaining items.
heap.clear();

// The heap should now be empty.
assert!(heap.is_empty())

A BinaryHeap with a known list of items can be initialized from an array:

use std::collections::BinaryHeap;

let heap = BinaryHeap::from([1, 5, 2]);

§Min-heap

Either core::cmp::Reverse or a custom Ord implementation can be used to make BinaryHeap a min-heap. This makes heap.pop() return the smallest value instead of the greatest one.

use std::collections::BinaryHeap;
use std::cmp::Reverse;

let mut heap = BinaryHeap::new();

// Wrap values in `Reverse`
heap.push(Reverse(1));
heap.push(Reverse(5));
heap.push(Reverse(2));

// If we pop these scores now, they should come back in the reverse order.
assert_eq!(heap.pop(), Some(Reverse(1)));
assert_eq!(heap.pop(), Some(Reverse(2)));
assert_eq!(heap.pop(), Some(Reverse(5)));
assert_eq!(heap.pop(), None);

§Time complexity

pushpoppeek/peek_mut
O(1)~O(log(n))O(1)

The value for push is an expected cost; the method documentation gives a more detailed analysis.

Implementations§

source§

impl<T> BinaryHeap<T>
where T: Ord,

1.0.0 (const: 1.80.0) · source

pub const fn new() -> BinaryHeap<T>

Creates an empty BinaryHeap as a max-heap.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::new();
heap.push(4);
1.0.0 · source

pub fn with_capacity(capacity: usize) -> BinaryHeap<T>

Creates an empty BinaryHeap with at least the specified capacity.

The binary heap will be able to hold at least capacity elements without reallocating. This method is allowed to allocate for more elements than capacity. If capacity is 0, the binary heap will not allocate.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::with_capacity(10);
heap.push(4);
source§

impl<T, A> BinaryHeap<T, A>
where T: Ord, A: Allocator,

source

pub const fn new_in(alloc: A) -> BinaryHeap<T, A>

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

Creates an empty BinaryHeap as a max-heap, using A as allocator.

§Examples

Basic usage:

#![feature(allocator_api)]

use std::alloc::System;
use std::collections::BinaryHeap;
let mut heap = BinaryHeap::new_in(System);
heap.push(4);
source

pub fn with_capacity_in(capacity: usize, alloc: A) -> BinaryHeap<T, A>

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

Creates an empty BinaryHeap with at least the specified capacity, using A as allocator.

The binary heap will be able to hold at least capacity elements without reallocating. This method is allowed to allocate for more elements than capacity. If capacity is 0, the binary heap will not allocate.

§Examples

Basic usage:

#![feature(allocator_api)]

use std::alloc::System;
use std::collections::BinaryHeap;
let mut heap = BinaryHeap::with_capacity_in(10, System);
heap.push(4);
1.12.0 · source

pub fn peek_mut(&mut self) -> Option<PeekMut<'_, T, A>>

Returns a mutable reference to the greatest item in the binary heap, or None if it is empty.

Note: If the PeekMut value is leaked, some heap elements might get leaked along with it, but the remaining elements will remain a valid heap.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::new();
assert!(heap.peek_mut().is_none());

heap.push(1);
heap.push(5);
heap.push(2);
{
    let mut val = heap.peek_mut().unwrap();
    *val = 0;
}
assert_eq!(heap.peek(), Some(&2));
§Time complexity

If the item is modified then the worst case time complexity is O(log(n)), otherwise it’s O(1).

1.0.0 · source

pub fn pop(&mut self) -> Option<T>

Removes the greatest item from the binary heap and returns it, or None if it is empty.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::from([1, 3]);

assert_eq!(heap.pop(), Some(3));
assert_eq!(heap.pop(), Some(1));
assert_eq!(heap.pop(), None);
§Time complexity

The worst case cost of pop on a heap containing n elements is O(log(n)).

1.0.0 · source

pub fn push(&mut self, item: T)

Pushes an item onto the binary heap.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::new();
heap.push(3);
heap.push(5);
heap.push(1);

assert_eq!(heap.len(), 3);
assert_eq!(heap.peek(), Some(&5));
§Time complexity

The expected cost of push, averaged over every possible ordering of the elements being pushed, and over a sufficiently large number of pushes, is O(1). This is the most meaningful cost metric when pushing elements that are not already in any sorted pattern.

The time complexity degrades if elements are pushed in predominantly ascending order. In the worst case, elements are pushed in ascending sorted order and the amortized cost per push is O(log(n)) against a heap containing n elements.

The worst case cost of a single call to push is O(n). The worst case occurs when capacity is exhausted and needs a resize. The resize cost has been amortized in the previous figures.

1.5.0 · source

pub fn into_sorted_vec(self) -> Vec<T, A>

Consumes the BinaryHeap and returns a vector in sorted (ascending) order.

§Examples

Basic usage:

use std::collections::BinaryHeap;

let mut heap = BinaryHeap::from([1, 2, 4, 5, 7]);
heap.push(6);
heap.push(3);

let vec = heap.into_sorted_vec();
assert_eq!(vec, [1, 2, 3, 4, 5, 6, 7]);
1.11.0 · source

pub fn append(&mut self, other: &mut BinaryHeap<T, A>)

Moves all the elements of other into self, leaving other empty.

§Examples

Basic usage:

use std::collections::BinaryHeap;

let mut a = BinaryHeap::from([-10, 1, 2, 3, 3]);
let mut b = BinaryHeap::from([-20, 5, 43]);

a.append(&mut b);

assert_eq!(a.into_sorted_vec(), [-20, -10, 1, 2, 3, 3, 5, 43]);
assert!(b.is_empty());
source

pub fn drain_sorted(&mut self) -> DrainSorted<'_, T, A>

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

Clears the binary heap, returning an iterator over the removed elements in heap order. If the iterator is dropped before being fully consumed, it drops the remaining elements in heap order.

The returned iterator keeps a mutable borrow on the heap to optimize its implementation.

Note:

  • .drain_sorted() is O(n * log(n)); much slower than .drain(). You should use the latter for most cases.
§Examples

Basic usage:

#![feature(binary_heap_drain_sorted)]
use std::collections::BinaryHeap;

let mut heap = BinaryHeap::from([1, 2, 3, 4, 5]);
assert_eq!(heap.len(), 5);

drop(heap.drain_sorted()); // removes all elements in heap order
assert_eq!(heap.len(), 0);
1.70.0 · source

pub fn retain<F>(&mut self, f: F)
where F: FnMut(&T) -> bool,

Retains only the elements specified by the predicate.

In other words, remove all elements e for which f(&e) returns false. The elements are visited in unsorted (and unspecified) order.

§Examples

Basic usage:

use std::collections::BinaryHeap;

let mut heap = BinaryHeap::from([-10, -5, 1, 2, 4, 13]);

heap.retain(|x| x % 2 == 0); // only keep even numbers

assert_eq!(heap.into_sorted_vec(), [-10, 2, 4])
source§

impl<T, A> BinaryHeap<T, A>
where A: Allocator,

1.0.0 · source

pub fn iter(&self) -> Iter<'_, T>

Returns an iterator visiting all values in the underlying vector, in arbitrary order.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let heap = BinaryHeap::from([1, 2, 3, 4]);

// Print 1, 2, 3, 4 in arbitrary order
for x in heap.iter() {
    println!("{x}");
}
source

pub fn into_iter_sorted(self) -> IntoIterSorted<T, A>

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

Returns an iterator which retrieves elements in heap order.

This method consumes the original heap.

§Examples

Basic usage:

#![feature(binary_heap_into_iter_sorted)]
use std::collections::BinaryHeap;
let heap = BinaryHeap::from([1, 2, 3, 4, 5]);

assert_eq!(heap.into_iter_sorted().take(2).collect::<Vec<_>>(), [5, 4]);
1.0.0 · source

pub fn peek(&self) -> Option<&T>

Returns the greatest item in the binary heap, or None if it is empty.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::new();
assert_eq!(heap.peek(), None);

heap.push(1);
heap.push(5);
heap.push(2);
assert_eq!(heap.peek(), Some(&5));
§Time complexity

Cost is O(1) in the worst case.

1.0.0 · source

pub fn capacity(&self) -> usize

Returns the number of elements the binary heap can hold without reallocating.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::with_capacity(100);
assert!(heap.capacity() >= 100);
heap.push(4);
1.0.0 · source

pub fn reserve_exact(&mut self, additional: usize)

Reserves the minimum capacity for at least additional elements more than the current length. Unlike reserve, this will not deliberately over-allocate to speculatively avoid frequent allocations. After calling reserve_exact, capacity will be greater than or equal to self.len() + additional. Does nothing if the capacity is already sufficient.

§Panics

Panics if the new capacity overflows usize.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::new();
heap.reserve_exact(100);
assert!(heap.capacity() >= 100);
heap.push(4);
1.0.0 · source

pub fn reserve(&mut self, additional: usize)

Reserves capacity for at least additional elements more than the current length. The allocator may reserve more space to speculatively avoid frequent allocations. After calling reserve, capacity will be greater than or equal to self.len() + additional. Does nothing if capacity is already sufficient.

§Panics

Panics if the new capacity overflows usize.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::new();
heap.reserve(100);
assert!(heap.capacity() >= 100);
heap.push(4);
1.63.0 · source

pub fn try_reserve_exact( &mut self, additional: usize, ) -> Result<(), TryReserveError>

Tries to reserve the minimum capacity for at least additional elements more than the current length. Unlike try_reserve, this will not deliberately over-allocate to speculatively avoid frequent allocations. After calling try_reserve_exact, capacity will be greater than or equal to self.len() + additional if it returns Ok(()). Does nothing if the capacity is already sufficient.

Note that the allocator may give the collection more space than it requests. Therefore, capacity can not be relied upon to be precisely minimal. Prefer try_reserve if future insertions are expected.

§Errors

If the capacity overflows, or the allocator reports a failure, then an error is returned.

§Examples
use std::collections::BinaryHeap;
use std::collections::TryReserveError;

fn find_max_slow(data: &[u32]) -> Result<Option<u32>, TryReserveError> {
    let mut heap = BinaryHeap::new();

    // Pre-reserve the memory, exiting if we can't
    heap.try_reserve_exact(data.len())?;

    // Now we know this can't OOM in the middle of our complex work
    heap.extend(data.iter());

    Ok(heap.pop())
}
1.63.0 · source

pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError>

Tries to reserve capacity for at least additional elements more than the current length. The allocator may reserve more space to speculatively avoid frequent allocations. After calling try_reserve, capacity will be greater than or equal to self.len() + additional if it returns Ok(()). Does nothing if capacity is already sufficient. This method preserves the contents even if an error occurs.

§Errors

If the capacity overflows, or the allocator reports a failure, then an error is returned.

§Examples
use std::collections::BinaryHeap;
use std::collections::TryReserveError;

fn find_max_slow(data: &[u32]) -> Result<Option<u32>, TryReserveError> {
    let mut heap = BinaryHeap::new();

    // Pre-reserve the memory, exiting if we can't
    heap.try_reserve(data.len())?;

    // Now we know this can't OOM in the middle of our complex work
    heap.extend(data.iter());

    Ok(heap.pop())
}
1.0.0 · source

pub fn shrink_to_fit(&mut self)

Discards as much additional capacity as possible.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap: BinaryHeap<i32> = BinaryHeap::with_capacity(100);

assert!(heap.capacity() >= 100);
heap.shrink_to_fit();
assert!(heap.capacity() == 0);
1.56.0 · source

pub fn shrink_to(&mut self, min_capacity: usize)

Discards capacity with a lower bound.

The capacity will remain at least as large as both the length and the supplied value.

If the current capacity is less than the lower limit, this is a no-op.

§Examples
use std::collections::BinaryHeap;
let mut heap: BinaryHeap<i32> = BinaryHeap::with_capacity(100);

assert!(heap.capacity() >= 100);
heap.shrink_to(10);
assert!(heap.capacity() >= 10);
1.80.0 · source

pub fn as_slice(&self) -> &[T]

Returns a slice of all values in the underlying vector, in arbitrary order.

§Examples

Basic usage:

use std::collections::BinaryHeap;
use std::io::{self, Write};

let heap = BinaryHeap::from([1, 2, 3, 4, 5, 6, 7]);

io::sink().write(heap.as_slice()).unwrap();
1.5.0 · source

pub fn into_vec(self) -> Vec<T, A>

Consumes the BinaryHeap and returns the underlying vector in arbitrary order.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let heap = BinaryHeap::from([1, 2, 3, 4, 5, 6, 7]);
let vec = heap.into_vec();

// Will print in some order
for x in vec {
    println!("{x}");
}
source

pub fn allocator(&self) -> &A

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

Returns a reference to the underlying allocator.

1.0.0 · source

pub fn len(&self) -> usize

Returns the length of the binary heap.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let heap = BinaryHeap::from([1, 3]);

assert_eq!(heap.len(), 2);
1.0.0 · source

pub fn is_empty(&self) -> bool

Checks if the binary heap is empty.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::new();

assert!(heap.is_empty());

heap.push(3);
heap.push(5);
heap.push(1);

assert!(!heap.is_empty());
1.6.0 · source

pub fn drain(&mut self) -> Drain<'_, T, A>

Clears the binary heap, returning an iterator over the removed elements in arbitrary order. If the iterator is dropped before being fully consumed, it drops the remaining elements in arbitrary order.

The returned iterator keeps a mutable borrow on the heap to optimize its implementation.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::from([1, 3]);

assert!(!heap.is_empty());

for x in heap.drain() {
    println!("{x}");
}

assert!(heap.is_empty());
1.0.0 · source

pub fn clear(&mut self)

Drops all items from the binary heap.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let mut heap = BinaryHeap::from([1, 3]);

assert!(!heap.is_empty());

heap.clear();

assert!(heap.is_empty());

Trait Implementations§

1.0.0 · source§

impl<T, A> Clone for BinaryHeap<T, A>
where T: Clone, A: Allocator + Clone,

source§

fn clone_from(&mut self, source: &BinaryHeap<T, A>)

Overwrites the contents of self with a clone of the contents of source.

This method is preferred over simply assigning source.clone() to self, as it avoids reallocation if possible.

See Vec::clone_from() for more details.

source§

fn clone(&self) -> BinaryHeap<T, A>

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

impl<T, A> Debug for BinaryHeap<T, A>
where T: Debug, A: Allocator,

source§

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

Formats the value using the given formatter. Read more
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impl<T> Decode for BinaryHeap<T>
where T: Decode + Ord,

§

fn decode<I>(input: &mut I) -> Result<BinaryHeap<T>, Error>
where I: Input,

Attempt to deserialise the value from input.
§

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<T> DecodeLength for BinaryHeap<T>

§

fn len(self_encoded: &[u8]) -> Result<usize, Error>

Return the number of elements in self_encoded.
1.0.0 · source§

impl<T> Default for BinaryHeap<T>
where T: Ord,

source§

fn default() -> BinaryHeap<T>

Creates an empty BinaryHeap<T>.

source§

impl<'de, T> Deserialize<'de> for BinaryHeap<T>
where T: Deserialize<'de> + Ord,

source§

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

Deserialize this value from the given Serde deserializer. Read more
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impl<T> Encode for BinaryHeap<T>
where T: Encode,

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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
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impl<V> EncodeAsType for BinaryHeap<V>
where V: EncodeAsType,

§

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.
§

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.
1.2.0 · source§

impl<'a, T, A> Extend<&'a T> for BinaryHeap<T, A>
where T: 'a + Ord + Copy, A: Allocator,

source§

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

Extends a collection with the contents of an iterator. Read more
source§

fn extend_one(&mut self, _: &'a T)

🔬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
1.0.0 · source§

impl<T, A> Extend<T> for BinaryHeap<T, A>
where T: Ord, A: Allocator,

source§

fn extend<I>(&mut self, iter: I)
where I: IntoIterator<Item = T>,

Extends a collection with the contents of an iterator. Read more
source§

fn extend_one(&mut self, item: T)

🔬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
1.56.0 · source§

impl<T, const N: usize> From<[T; N]> for BinaryHeap<T>
where T: Ord,

source§

fn from(arr: [T; N]) -> BinaryHeap<T>

use std::collections::BinaryHeap;

let mut h1 = BinaryHeap::from([1, 4, 2, 3]);
let mut h2: BinaryHeap<_> = [1, 4, 2, 3].into();
while let Some((a, b)) = h1.pop().zip(h2.pop()) {
    assert_eq!(a, b);
}
1.5.0 · source§

impl<T, A> From<BinaryHeap<T, A>> for Vec<T, A>
where A: Allocator,

source§

fn from(heap: BinaryHeap<T, A>) -> Vec<T, A>

Converts a BinaryHeap<T> into a Vec<T>.

This conversion requires no data movement or allocation, and has constant time complexity.

1.5.0 · source§

impl<T, A> From<Vec<T, A>> for BinaryHeap<T, A>
where T: Ord, A: Allocator,

source§

fn from(vec: Vec<T, A>) -> BinaryHeap<T, A>

Converts a Vec<T> into a BinaryHeap<T>.

This conversion happens in-place, and has O(n) time complexity.

1.0.0 · source§

impl<T> FromIterator<T> for BinaryHeap<T>
where T: Ord,

source§

fn from_iter<I>(iter: I) -> BinaryHeap<T>
where I: IntoIterator<Item = T>,

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

impl<'a, T, A> IntoIterator for &'a BinaryHeap<T, A>
where A: Allocator,

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type Item = &'a T

The type of the elements being iterated over.
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type IntoIter = Iter<'a, T>

Which kind of iterator are we turning this into?
source§

fn into_iter(self) -> Iter<'a, T>

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

impl<T, A> IntoIterator for BinaryHeap<T, A>
where A: Allocator,

source§

fn into_iter(self) -> IntoIter<T, A>

Creates a consuming iterator, that is, one that moves each value out of the binary heap in arbitrary order. The binary heap cannot be used after calling this.

§Examples

Basic usage:

use std::collections::BinaryHeap;
let heap = BinaryHeap::from([1, 2, 3, 4]);

// Print 1, 2, 3, 4 in arbitrary order
for x in heap.into_iter() {
    // x has type i32, not &i32
    println!("{x}");
}
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type Item = T

The type of the elements being iterated over.
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type IntoIter = IntoIter<T, A>

Which kind of iterator are we turning this into?
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impl<T> IntoVisitor for BinaryHeap<T>
where T: IntoVisitor + Ord,

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type AnyVisitor<R: TypeResolver> = BasicVisitor<BinaryHeap<T>, R>

The visitor type used to decode SCALE encoded bytes to Self.
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fn into_visitor<R>() -> <BinaryHeap<T> as IntoVisitor>::AnyVisitor<R>
where R: TypeResolver,

A means of obtaining this visitor.
source§

impl<T> Serialize for BinaryHeap<T>
where T: Serialize,

source§

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 BinaryHeap<T>
where T: TypeInfo + 'static,

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type Identity = BinaryHeap<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<T, LikeT> EncodeLike<&[(LikeT,)]> for BinaryHeap<T>
where T: EncodeLike<LikeT>, LikeT: Encode,

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impl<T, LikeT> EncodeLike<BinaryHeap<LikeT>> for &[(T,)]
where T: EncodeLike<LikeT>, LikeT: Encode,

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impl<T, LikeT> EncodeLike<BinaryHeap<LikeT>> for BinaryHeap<T>
where T: EncodeLike<LikeT>, LikeT: Encode,

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impl<T, A> Freeze for BinaryHeap<T, A>
where A: Freeze,

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impl<T, A> RefUnwindSafe for BinaryHeap<T, A>

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impl<T, A> Send for BinaryHeap<T, A>
where A: Send, T: Send,

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impl<T, A> Sync for BinaryHeap<T, A>
where A: Sync, T: Sync,

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impl<T, A> Unpin for BinaryHeap<T, A>
where A: Unpin, T: Unpin,

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impl<T, A> UnwindSafe for BinaryHeap<T, A>
where A: UnwindSafe, T: UnwindSafe,

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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<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> 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> 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<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> 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<I> EventProcessor for I
where I: IntoIterator<Item = RuntimeEvent> + Clone,

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fn not_waited() -> Error

This function is called if a received event has an unexpected type. Read more
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fn proc<'life0, 'async_trait, T>( &'life0 mut self, predicate: impl Fn(RuntimeEvent) -> Option<T> + 'async_trait, ) -> Pin<Box<dyn Future<Output = Result<T, Error>> + 'async_trait>>
where 'life0: 'async_trait, T: 'async_trait, I: 'async_trait,

Event processing function. Read more
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fn proc_many<'life0, 'async_trait, T>( &'life0 mut self, predicate: impl Fn(RuntimeEvent) -> Option<T> + 'async_trait, validate: impl Fn(Vec<T>) -> (Vec<T>, bool) + 'async_trait, ) -> Pin<Box<dyn Future<Output = Result<Vec<T>, Error>> + 'async_trait>>
where 'life0: 'async_trait, T: 'async_trait, I: 'async_trait,

Multiple events processing function. Read more
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fn message_processed<'life0, 'async_trait>( &'life0 mut self, message_id: MessageId, ) -> Pin<Box<dyn Future<Output = Result<DispatchStatus>> + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Check whether the message identified by message_id has been processed.
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fn message_processed_batch<'life0, 'async_trait>( &'life0 mut self, message_ids: impl 'async_trait + IntoIterator<Item = MessageId>, ) -> Pin<Box<dyn Future<Output = Result<Vec<(MessageId, DispatchStatus)>>> + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Check whether the batch of messages identified by corresponding message_ids has been processed.
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fn reply_bytes_on<'life0, 'async_trait>( &'life0 mut self, message_id: MessageId, ) -> Pin<Box<dyn Future<Output = Result<(MessageId, Result<Vec<u8>, String>, u128)>> + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Get details of a reply to the message identified by message_id. Read more
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fn err_or_succeed<'life0, 'async_trait>( &'life0 mut self, message_id: MessageId, ) -> Pin<Box<dyn Future<Output = Result<Option<String>>> + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Check whether the processing of a message identified by message_id resulted in an error or has been successful. Read more
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fn err_or_succeed_batch<'life0, 'async_trait>( &'life0 mut self, message_ids: impl 'async_trait + IntoIterator<Item = MessageId>, ) -> Pin<Box<dyn Future<Output = Result<Vec<(MessageId, Option<String>)>>> + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Check whether processing batch of messages identified by corresponding message_ids resulted in errors or has been successful. Read more
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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> Joiner for T
where T: for<'a> Extend<&'a u8>,

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fn and<V>(self, value: &V) -> T
where V: Codec,

Append encoding of value to Self.
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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
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> 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> 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<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> 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> StaticTypeInfo for T
where T: TypeInfo + 'static,

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impl<T> TypeId for T
where T: Clone + Debug + Default,