Struct core_extensions::RunOnDrop
source · [−]pub struct RunOnDrop<T, F> where
F: FnOnce(T), { /* private fields */ }
on_drop
only.Expand description
A wrapper type that runs a closure at the end of the scope.
This takes both a value and a closure(that takes the value as a parameter), allowing you to access the value before the closure runs.
Example
use core_extensions::RunOnDrop;
fn main() {
let mut guard = RunOnDrop::new("Hello".to_string(), |string|{
assert_eq!(string, "Hello, world!");
});
assert_eq!(guard.get(), "Hello");
guard.get_mut().push_str(", world!");
}
Implementations
Trait Implementations
Auto Trait Implementations
impl<T, F> RefUnwindSafe for RunOnDrop<T, F> where
F: RefUnwindSafe,
T: RefUnwindSafe,
impl<T, F> Send for RunOnDrop<T, F> where
F: Send,
T: Send,
impl<T, F> Sync for RunOnDrop<T, F> where
F: Sync,
T: Sync,
impl<T, F> Unpin for RunOnDrop<T, F> where
F: Unpin,
T: Unpin,
impl<T, F> UnwindSafe for RunOnDrop<T, F> where
F: UnwindSafe,
T: UnwindSafe,
Blanket Implementations
sourceimpl<T> AsPhantomData for T where
T: ?Sized,
impl<T> AsPhantomData for T where
T: ?Sized,
sourcefn as_phantom(&self) -> PhantomData<Self>
fn as_phantom(&self) -> PhantomData<Self>
phantom
only.Gets a PhantomData<Self>
. Read more
sourcefn as_phantom_covariant(&self) -> PhantomData<fn() -> Self>
fn as_phantom_covariant(&self) -> PhantomData<fn() -> Self>
phantom
only.Gets a PhantomData<fn() -> Self>
, a covariant PhantomData
.
sourcefn as_phantom_contra(&self) -> PhantomData<fn(_: Self)>
fn as_phantom_contra(&self) -> PhantomData<fn(_: Self)>
phantom
only.Gets a PhantomData<fn(Self)>
, a contravariant PhantomData
.
sourcefn as_phantom_invariant(&self) -> PhantomData<fn(_: Self) -> Self>
fn as_phantom_invariant(&self) -> PhantomData<fn(_: Self) -> Self>
phantom
only.Gets a PhantomData<fn(Self) -> Self>
, an invariant PhantomData
.
sourceconst PHANTOM: PhantomData<Self> = PhantomData
const PHANTOM: PhantomData<Self> = PhantomData
phantom
only.Gets a PhantomData<Self>
. Read more
sourceconst PHANTOM_COVARIANT: PhantomData<fn() -> Self> = PhantomData
const PHANTOM_COVARIANT: PhantomData<fn() -> Self> = PhantomData
phantom
only.Constructs a PhantomData<fn() -> T>
, a covariant PhantomData
. Read more
sourceconst PHANTOM_CONTRA: PhantomData<fn(_: Self)> = PhantomData
const PHANTOM_CONTRA: PhantomData<fn(_: Self)> = PhantomData
phantom
only.Gets a PhantomData<fn(Self)>
, a contravariant PhantomData
. Read more
sourceconst PHANTOM_INVARIANT: PhantomData<fn(_: Self) -> Self> = PhantomData
const PHANTOM_INVARIANT: PhantomData<fn(_: Self) -> Self> = PhantomData
phantom
only.Gets a PhantomData<fn(Self) -> Self>
, an invariant PhantomData
. Read more
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> CallExt for T where
T: ?Sized,
impl<T> CallExt for T where
T: ?Sized,
sourcefn ref_call<P>(&self, params: P) -> Self::Returns where
Self: CallRef<P>,
fn ref_call<P>(&self, params: P) -> Self::Returns where
Self: CallRef<P>,
callable
only.For calling CallRef::ref_call_
,
with the ability to specify the types of the arguments.. Read more