Struct std::str::CharIndices1.0.0[][src]

pub struct CharIndices<'a> { /* fields omitted */ }

An iterator over the chars of a string slice, and their positions.

This struct is created by the char_indices method on str. See its documentation for more.


impl<'a> CharIndices<'a>[src]

pub fn as_str(&self) -> &'a str1.4.0[src]

Views the underlying data as a subslice of the original data.

This has the same lifetime as the original slice, and so the iterator can continue to be used while this exists.

pub fn offset(&self) -> usize[src]

🔬 This is a nightly-only experimental API. (char_indices_offset #83871)

Returns the byte position of the next character, or the length of the underlying string if there are no more characters.


let mut chars = "a楽".char_indices();

assert_eq!(chars.offset(), 0);
assert_eq!(, Some((0, 'a')));

assert_eq!(chars.offset(), 1);
assert_eq!(, Some((1, '楽')));

assert_eq!(chars.offset(), 4);
assert_eq!(, None);

Trait Implementations

impl<'a> Clone for CharIndices<'a>[src]

impl<'a> Debug for CharIndices<'a>[src]

impl<'a> DoubleEndedIterator for CharIndices<'a>[src]

impl<'a> Iterator for CharIndices<'a>[src]

type Item = (usize, char)

The type of the elements being iterated over.

impl<'_> FusedIterator for CharIndices<'_>1.26.0[src]

Auto Trait Implementations

impl<'a> RefUnwindSafe for CharIndices<'a>

impl<'a> Send for CharIndices<'a>

impl<'a> Sync for CharIndices<'a>

impl<'a> Unpin for CharIndices<'a>

impl<'a> UnwindSafe for CharIndices<'a>

Blanket Implementations

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

impl<T> Borrow<T> for T where
    T: ?Sized

impl<T> BorrowMut<T> for T where
    T: ?Sized

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

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

impl<I> IntoIterator for I where
    I: Iterator

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> ToOwned for T where
    T: Clone

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 

type Error = Infallible

The type returned in the event of a conversion error.

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

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.