Struct Inspect
#[must_use = "iterators are lazy and do nothing unless consumed"]
pub struct Inspect<I, F> { pub(in ::iter::adapters::inspect) iter: I, pub(in ::iter::adapters::inspect) f: F }An iterator that calls a function with a reference to each element before yielding it.
This struct is created by the inspect method on Iterator. See its
documentation for more.
Fields
iter: If: F
Implementations
impl<I, F> Inspect<I, F>
const fn new(iter: I, f: F) -> Inspect<I, F>
impl<I: Iterator, F> Inspect<I, F>
where
F: FnMut(&I::Item),
fn do_inspect(&mut self, elt: Option<I::Item>) -> Option<I::Item>
Trait Implementations
impl<I, F> SourceIter for Inspect<I, F>
where
I: SourceIter,
type Source = <I as SourceIter>::Source;unsafe fn as_inner(&mut self) -> &mut I::Source
impl<I: Clone, F: Clone> Clone for Inspect<I, F>
fn clone(&self) -> Inspect<I, F>
impl<I: Debug, F> Debug for Inspect<I, F>
fn fmt(&self, f: &mut Formatter<'_>) -> Result
impl<I: DoubleEndedIterator, F> DoubleEndedIterator for Inspect<I, F>
where
F: FnMut(&I::Item),
fn next_back(&mut self) -> Option<I::Item>fn try_rfold<Acc, Fold, R>(&mut self, init: Acc, fold: Fold) -> R where Self: Sized, Fold: FnMut(Acc, Self::Item) -> R, R: Try<Output = Acc>,fn rfold<Acc, Fold>(self, init: Acc, fold: Fold) -> Acc where Fold: FnMut(Acc, Self::Item) -> Acc,
impl<I: ExactSizeIterator, F> ExactSizeIterator for Inspect<I, F>
where
F: FnMut(&I::Item),
fn len(&self) -> usizefn is_empty(&self) -> bool
impl<I: FusedIterator, F> FusedIterator for Inspect<I, F>
where
F: FnMut(&I::Item),
impl<I: InPlaceIterable, F> InPlaceIterable for Inspect<I, F>
const EXPAND_BY: Option<NonZero<usize>> = I::EXPAND_BY;const MERGE_BY: Option<NonZero<usize>> = I::MERGE_BY;
impl<I: Iterator, F> Iterator for Inspect<I, F>
where
F: FnMut(&I::Item),
type Item = <I as Iterator>::Item;fn next(&mut self) -> Option<I::Item>fn size_hint(&self) -> (usize, Option<usize>)fn try_fold<Acc, Fold, R>(&mut self, init: Acc, fold: Fold) -> R where Self: Sized, Fold: FnMut(Acc, Self::Item) -> R, R: Try<Output = Acc>,fn fold<Acc, Fold>(self, init: Acc, fold: Fold) -> Acc where Fold: FnMut(Acc, Self::Item) -> Acc,
impl<I: TrustedFused, F> TrustedFused for Inspect<I, F>
Auto Trait Implementations
impl<I, F> Freeze for Inspect<I, F>
where
I: Freeze,
F: Freeze,
impl<I, F> RefUnwindSafe for Inspect<I, F>
where
I: RefUnwindSafe,
F: RefUnwindSafe,
impl<I, F> Send for Inspect<I, F>
where
I: Send,
F: Send,
impl<I, F> Sync for Inspect<I, F>
where
I: Sync,
F: Sync,
impl<I, F> Unpin for Inspect<I, F>
where
I: Unpin,
F: Unpin,
impl<I, F> UnsafeUnpin for Inspect<I, F>
where
I: UnsafeUnpin,
F: UnsafeUnpin,
impl<I, F> UnwindSafe for Inspect<I, F>
where
I: UnwindSafe,
F: UnwindSafe,
Blanket Implementations
impl<I> IntoIterator for Inspect<I, F>
where
I: Iterator,
type Item = <I as Iterator>::Item;type IntoIter = I;fn into_iter(self) -> I
impl<T> Any for Inspect<I, F>
where
T: 'static + ?Sized,
fn type_id(&self) -> TypeId
impl<T> Borrow<T> for Inspect<I, F>
where
T: ?Sized,
fn borrow(&self) -> &T
impl<T> BorrowMut<T> for Inspect<I, F>
where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
impl<T> CloneToUninit for Inspect<I, F>
where
T: Clone,
unsafe fn clone_to_uninit(&self, dest: *mut u8)
impl<T> From<T> for Inspect<I, F>
fn from(t: T) -> TReturns the argument unchanged.
impl<T> SizeHint for Inspect<I, F>
where
T: ?Sized,
fn lower_bound(&self) -> usizefn upper_bound(&self) -> Option<usize>
impl<T> SizedTypeProperties for Inspect<I, F>
impl<T, U> Into<U> for Inspect<I, F>
where
U: From<T>,
fn into(self) -> UCalls
U::from(self).That is, this conversion is whatever the implementation of
[From]<T> for Uchooses to do.
impl<T, U> TryFrom<U> for Inspect<I, F>
where
U: Into<T>,
type Error = Infallible;fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
impl<T, U> TryInto<U> for Inspect<I, F>
where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error;fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>