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)

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.

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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)

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

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impl<'a, T, A> Freeze for PeekMut<'a, T, A>
where &'a mut Vec<T, A>: Freeze,

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impl<'a, T, A> RefUnwindSafe for PeekMut<'a, T, A>
where &'a mut Vec<T, A>: RefUnwindSafe,

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impl<'a, T, A> UnsafeUnpin for PeekMut<'a, T, A>
where &'a mut Vec<T, A>: UnsafeUnpin,

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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<R> CryptoRng for R
where R: TryCryptoRng<Error = !> + ?Sized,

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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>

Converts Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>, which can then be downcast into Box<dyn ConcreteType> where ConcreteType implements Trait.

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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Converts Rc<Trait> (where Trait: Downcast) to Rc<Any>, which can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

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fn as_any(&self) -> &(dyn Any + 'static)

Converts &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)

Converts &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> DowncastSend for T
where T: Any + Send,

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fn into_any_send(self: Box<T>) -> Box<dyn Any + Send>

Converts Box<Trait> (where Trait: DowncastSend) to Box<dyn Any + Send>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.

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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_sync(self: Box<T>) -> Box<dyn Any + Send + Sync>

Converts Box<Trait> (where Trait: DowncastSync) to Box<dyn Any + Send + Sync>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync> ⓘ

Converts Arc<Trait> (where Trait: DowncastSync) to Arc<Any>, which can then be downcast into Arc<ConcreteType> where ConcreteType implements Trait.

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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 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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