Struct `OnceWith`

struct OnceWith<F> { ... }

An iterator that yields a single element of type A by applying the provided closure F: FnOnce() -> A.

This struct is created by the [once_with()] function. See its documentation for more.

Implementations

`impl<A, F: FnOnce() -> A> DoubleEndedIterator for OnceWith<F>`

fn next_back(self: &mut Self) -> Option<A>

`impl<A, F: FnOnce() -> A> ExactSizeIterator for OnceWith<F>`

fn len(self: &Self) -> usize

`impl<A, F: FnOnce() -> A> FusedIterator for OnceWith<F>`

`impl<A, F: FnOnce() -> A> Iterator for OnceWith<F>`

fn next(self: &mut Self) -> Option<A>
fn size_hint(self: &Self) -> (usize, Option<usize>)

`impl<A, F: FnOnce() -> A> TrustedLen for OnceWith<F>`

`impl<F> Debug for OnceWith<F>`

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

`impl<F> Freeze for OnceWith<F>`

`impl<F> RefUnwindSafe for OnceWith<F>`

`impl<F> Send for OnceWith<F>`

`impl<F> Sync for OnceWith<F>`

`impl<F> Unpin for OnceWith<F>`

`impl<F> UnsafeUnpin for OnceWith<F>`

`impl<F> UnwindSafe for OnceWith<F>`

`impl<F: $crate::clone::Clone> Clone for OnceWith<F>`

fn clone(self: &Self) -> OnceWith<F>

`impl<I> IntoIterator for OnceWith<F>`

fn into_iter(self: Self) -> I

`impl<T> Any for OnceWith<F>`

fn type_id(self: &Self) -> TypeId

`impl<T> Borrow for OnceWith<F>`

fn borrow(self: &Self) -> &T

`impl<T> BorrowMut for OnceWith<F>`

fn borrow_mut(self: &mut Self) -> &mut T

`impl<T> CloneToUninit for OnceWith<F>`

unsafe fn clone_to_uninit(self: &Self, dest: *mut u8)

`impl<T> From for OnceWith<F>`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T, U> Into for OnceWith<F>`

fn into(self: Self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for OnceWith<F>`

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

`impl<T, U> TryInto for OnceWith<F>`

fn try_into(self: Self) -> Result<U, <U as TryFrom<T>>::Error>