DropGuard

solar_data_structures

Struct DropGuard 

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pub struct DropGuard<T, F: FnOnce(T)> { /* private fields */ }
Expand description

Runs F on T when the instance is dropped.

Equivalent of std::mem::DropGuard.

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impl<T, F: FnOnce(T)> DropGuard<T, F>

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pub const fn new(value: T, f: F) -> Self

Creates a new OnDrop instance.

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pub fn into_inner(guard: Self) -> T

Consumes the DropGuard, returning the wrapped value.

This will not execute the closure. This is implemented as an associated function to prevent any potential conflicts with any other methods called into_inner from the Deref and DerefMut impls.

It is typically preferred to call this function instead of mem::forget because it will return the stored value and drop variables captured by the closure instead of leaking their owned resources.

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impl<T, F: FnOnce(T)> Deref for DropGuard<T, F>

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl<T, F: FnOnce(T)> DerefMut for DropGuard<T, F>

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fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.
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impl<T, F: FnOnce(T)> Drop for DropGuard<T, F>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<T, F> Freeze for DropGuard<T, F>
where T: Freeze, F: Freeze,

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impl<T, F> RefUnwindSafe for DropGuard<T, F>
where T: RefUnwindSafe, F: RefUnwindSafe,

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impl<T, F> Send for DropGuard<T, F>
where T: Send, F: Send,

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impl<T, F> Sync for DropGuard<T, F>
where T: Sync, F: Sync,

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impl<T, F> Unpin for DropGuard<T, F>
where T: Unpin, F: Unpin,

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impl<T, F> UnwindSafe for DropGuard<T, F>
where T: UnwindSafe, F: 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, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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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> 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> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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)
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.

Layout§

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.