PeekMut in std::vec - Rust
Description: Structure wrapping a mutable reference to the last item in a `Vec`.

## PeekMut

# Struct PeekMut

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    pub struct PeekMut<'a, T, A = Global>where
        A: Allocator,{ /* private fields */ }

🔬This is a nightly-only experimental API. (`vec_peek_mut` #122742)
Expand description

Structure wrapping a mutable reference to the last item in a `Vec`.

This `struct` is created by the `peek_mut` method on `Vec`. See its documentation for more.

## Implementations§

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### impl<'a, T, A> PeekMut<'a, T, A>
where A: Allocator,

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#### pub fn pop(this: PeekMut<'a, T, A>) -> T

🔬This is a nightly-only experimental API. (`vec_peek_mut` #122742)

Removes the peeked value from the vector and returns it.

## Trait Implementations§

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### impl<T, A> Debug for PeekMut<'_, T, A>
where T: Debug, A: Allocator,

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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<'a, T, A> Deref for PeekMut<'a, T, A>
where A: Allocator,

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#### type Target = T

The resulting type after dereferencing.
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#### fn deref(&self) -> &<PeekMut<'a, T, A> as Deref>::Target

Dereferences the value.
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### impl<'a, T, A> DerefMut for PeekMut<'a, T, A>
where A: Allocator,

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#### fn deref_mut(&mut self) -> &mut <PeekMut<'a, T, A> as Deref>::Target

Mutably dereferences the value.

## Auto Trait Implementations§

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### impl<'a, T, A> Freeze for PeekMut<'a, T, A>

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### impl<'a, T, A> RefUnwindSafe for PeekMut<'a, T, A>
where A: RefUnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, A> Send for PeekMut<'a, T, A>
where A: Send, T: Send,

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### impl<'a, T, A> Sync for PeekMut<'a, T, A>
where A: Sync, T: Sync,

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### impl<'a, T, A> Unpin for PeekMut<'a, T, A>

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### impl<'a, T, A = Global> !UnwindSafe for PeekMut<'a, T, A>

## 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<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> 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<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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#### type Target = T

🔬This is a nightly-only experimental API. (`arbitrary_self_types` #44874)
The target type on which the method may be called.
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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.