1.0.0[][src]Struct std::iter::Enumerate

#[must_use = "iterators are lazy and do nothing unless consumed"]
pub struct Enumerate<I> { /* fields omitted */ }

An iterator that yields the current count and the element during iteration.

This struct is created by the enumerate method on Iterator. See its documentation for more.

Trait Implementations

impl<I> Debug for Enumerate<I> where
    I: Debug
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impl<I> DoubleEndedIterator for Enumerate<I> where
    I: ExactSizeIterator + DoubleEndedIterator
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impl<I> FusedIterator for Enumerate<I> where
    I: FusedIterator
1.26.0[src]

impl<I> Clone for Enumerate<I> where
    I: Clone
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impl<I> ExactSizeIterator for Enumerate<I> where
    I: ExactSizeIterator
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impl<I> Iterator for Enumerate<I> where
    I: Iterator
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type Item = (usize, <I as Iterator>::Item)

The type of the elements being iterated over.

fn next(&mut self) -> Option<(usize, <I as Iterator>::Item)>[src]

Overflow Behavior

The method does no guarding against overflows, so enumerating more than usize::MAX elements either produces the wrong result or panics. If debug assertions are enabled, a panic is guaranteed.

Panics

Might panic if the index of the element overflows a usize.

impl<I> TrustedLen for Enumerate<I> where
    I: TrustedLen
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Auto Trait Implementations

impl<I> UnwindSafe for Enumerate<I> where
    I: UnwindSafe

impl<I> RefUnwindSafe for Enumerate<I> where
    I: RefUnwindSafe

impl<I> Unpin for Enumerate<I> where
    I: Unpin

impl<I> Send for Enumerate<I> where
    I: Send

impl<I> Sync for Enumerate<I> where
    I: Sync

Blanket Implementations

impl<T> From<T> for T[src]

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.

impl<T, U> Into<U> for T where
    U: From<T>, 
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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.

impl<I> IntoIterator for I where
    I: Iterator
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type Item = <I as Iterator>::Item

The type of the elements being iterated over.

type IntoIter = I

Which kind of iterator are we turning this into?

impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> ToOwned for T where
    T: Clone
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type Owned = T

The resulting type after obtaining ownership.