Struct OptionFlatten

pub struct OptionFlatten<A> { pub(in ::option) iter: Option<A> }

The iterator produced by Option::into_flat_iter. See its documentation for more.

Fields

iter: Option<A>

Trait Implementations

impl<A: Clone> Clone for OptionFlatten<A>

fn clone(&self) -> OptionFlatten<A>

impl<A: Debug> Debug for OptionFlatten<A>

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

impl<A: DoubleEndedIterator> DoubleEndedIterator for OptionFlatten<A>

fn next_back(&mut self) -> Option<Self::Item>
fn advance_back_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
fn nth_back(&mut self, n: usize) -> Option<Self::Item>
fn rfold<Acc, Fold>(self, init: Acc, fold: Fold) -> Acc
where
    Fold: FnMut(Acc, Self::Item) -> Acc,
fn try_rfold<Acc, Fold, R>(&mut self, init: Acc, fold: Fold) -> R
where
    Fold: FnMut(Acc, Self::Item) -> R,
    R: Try<Output = Acc>,

impl<A: ExactSizeIterator> ExactSizeIterator for OptionFlatten<A>

impl<A: FusedIterator> FusedIterator for OptionFlatten<A>

impl<A: Iterator> Iterator for OptionFlatten<A>

type Item = <A as Iterator>::Item;
fn next(&mut self) -> Option<Self::Item>
fn size_hint(&self) -> (usize, Option<usize>)
fn advance_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
fn nth(&mut self, n: usize) -> Option<Self::Item>
fn fold<Acc, Fold>(self, init: Acc, fold: Fold) -> Acc
where
    Fold: FnMut(Acc, Self::Item) -> Acc,
fn try_fold<Acc, Fold, R>(&mut self, init: Acc, fold: Fold) -> R
where
    Fold: FnMut(Acc, Self::Item) -> R,
    R: Try<Output = Acc>,
fn count(self) -> usize
fn last(self) -> Option<Self::Item>

impl<A: TrustedLen> TrustedLen for OptionFlatten<A>

Auto Trait Implementations

impl<A> Freeze for OptionFlatten<A> where Option<A>: Freeze,

impl<A> RefUnwindSafe for OptionFlatten<A> where Option<A>: RefUnwindSafe,

impl<A> Send for OptionFlatten<A> where Option<A>: Send,

impl<A> Sync for OptionFlatten<A> where Option<A>: Sync,

impl<A> Unpin for OptionFlatten<A> where Option<A>: Unpin,

impl<A> UnsafeUnpin for OptionFlatten<A> where Option<A>: UnsafeUnpin,

impl<A> UnwindSafe for OptionFlatten<A> where Option<A>: UnwindSafe,

Blanket Implementations

impl<I> IntoIterator for OptionFlatten<A> where I: Iterator,

type Item = <I as Iterator>::Item;
type IntoIter = I;
fn into_iter(self) -> I

impl<T> Any for OptionFlatten<A> where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for OptionFlatten<A> where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for OptionFlatten<A> where T: ?Sized,

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

impl<T> CloneToUninit for OptionFlatten<A> where T: Clone,

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

impl<T> From<T> for OptionFlatten<A>

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> SizeHint for OptionFlatten<A> where T: ?Sized,

fn lower_bound(&self) -> usize
fn upper_bound(&self) -> Option<usize>

impl<T> SizedTypeProperties for OptionFlatten<A>

impl<T, U> Into<U> for OptionFlatten<A> where U: From<T>,

fn into(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<U> for OptionFlatten<A> where U: Into<T>,

type Error = never;
fn try_from(value: U) -> Result<T, never>

impl<T, U> TryInto<U> for OptionFlatten<A> where U: TryFrom<T>,

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