Struct std::ops::RangeInclusive

pub struct RangeInclusive<Idx> {
    pub start: Idx,
    pub end: Idx,
}

An range bounded inclusively below and above (start..=end).

The RangeInclusive start..=end contains all values with x >= start and x <= end. It is empty unless start <= end.

This iterator is fused, but the specific values of start and end after iteration has finished are unspecified other than that .is_empty() will return true once no more values will be produced.

Examples

#![feature(inclusive_range_fields)]

assert_eq!((3..=5), std::ops::RangeInclusive { start: 3, end: 5 });
assert_eq!(3 + 4 + 5, (3..=5).sum());

let arr = [0, 1, 2, 3];
assert_eq!(arr[ ..=2], [0,1,2  ]);
assert_eq!(arr[1..=2], [  1,2  ]);  // RangeInclusive

Fields

start: Idx

🔬 This is a nightly-only experimental API. (inclusive_range_fields #49022)

The lower bound of the range (inclusive).

end: Idx

🔬 This is a nightly-only experimental API. (inclusive_range_fields #49022)

The upper bound of the range (inclusive).

Methods

impl<Idx> RangeInclusive<Idx> where     Idx: PartialOrd<Idx>,

pub fn contains(&self, item: Idx) -> bool

🔬 This is a nightly-only experimental API. (range_contains #32311)

recently added as per RFC

Returns true if item is contained in the range.

Examples

#![feature(range_contains)]

assert!(!(3..=5).contains(2));
assert!( (3..=5).contains(3));
assert!( (3..=5).contains(4));
assert!( (3..=5).contains(5));
assert!(!(3..=5).contains(6));

assert!( (3..=3).contains(3));
assert!(!(3..=2).contains(3));

pub fn is_empty(&self) -> bool

🔬 This is a nightly-only experimental API. (range_is_empty #48111)

recently added

Returns true if the range contains no items.

Examples

#![feature(range_is_empty)]

assert!(!(3..=5).is_empty());
assert!(!(3..=3).is_empty());
assert!( (3..=2).is_empty());

The range is empty if either side is incomparable:

#![feature(range_is_empty)]

use std::f32::NAN;
assert!(!(3.0..=5.0).is_empty());
assert!( (3.0..=NAN).is_empty());
assert!( (NAN..=5.0).is_empty());

This method returns true after iteration has finished:

#![feature(range_is_empty)]

let mut r = 3..=5;
for _ in r.by_ref() {}
// Precise field values are unspecified here
assert!(r.is_empty());

Trait Implementations

impl<A> DoubleEndedIterator for RangeInclusive<A> where     A: Step,

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

Removes and returns an element from the end of the iterator.

fn try_rfold<B, F, R>(&mut self, init: B, f: F) -> R where     F: FnMut(B, <RangeInclusive<A> as Iterator>::Item) -> R,     R: Try<Ok = B>,     RangeInclusive<A>: Sized,

🔬 This is a nightly-only experimental API. (iterator_try_fold #45594)

This is the reverse version of [try_fold()]: it takes elements starting from the back of the iterator.

fn rfold<B, F>(self, accum: B, f: F) -> B where     F: FnMut(B, Self::Item) -> B,

🔬 This is a nightly-only experimental API. (iter_rfold #44705)

An iterator method that reduces the iterator's elements to a single, final value, starting from the back.

fn rfind<P>(&mut self, predicate: P) -> Option<Self::Item> where     P: FnMut(&Self::Item) -> bool,

🔬 This is a nightly-only experimental API. (iter_rfind #39480)

Searches for an element of an iterator from the right that satisfies a predicate.

impl<Idx> Debug for RangeInclusive<Idx> where     Idx: Debug,

fn fmt(&self, fmt: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl ExactSizeIterator for RangeInclusive<u16>

fn len(&self) -> usize

Returns the exact number of times the iterator will iterate.

fn is_empty(&self) -> bool

🔬 This is a nightly-only experimental API. (exact_size_is_empty #35428)

Returns whether the iterator is empty.

impl ExactSizeIterator for RangeInclusive<i16>

fn len(&self) -> usize

Returns the exact number of times the iterator will iterate.

fn is_empty(&self) -> bool

🔬 This is a nightly-only experimental API. (exact_size_is_empty #35428)

Returns whether the iterator is empty.

impl ExactSizeIterator for RangeInclusive<u8>

fn len(&self) -> usize

Returns the exact number of times the iterator will iterate.

fn is_empty(&self) -> bool

🔬 This is a nightly-only experimental API. (exact_size_is_empty #35428)

Returns whether the iterator is empty.

impl ExactSizeIterator for RangeInclusive<i8>

fn len(&self) -> usize

Returns the exact number of times the iterator will iterate.

fn is_empty(&self) -> bool

🔬 This is a nightly-only experimental API. (exact_size_is_empty #35428)

Returns whether the iterator is empty.

impl Index<RangeInclusive<usize>> for str

type Output = str

The returned type after indexing.

fn index(&self, index: RangeInclusive<usize>) -> &str

Performs the indexing (container[index]) operation.

impl<A> FusedIterator for RangeInclusive<A> where     A: Step,

impl<Idx> Hash for RangeInclusive<Idx> where     Idx: Hash,

fn hash<__HIdx>(&self, __arg_0: &mut __HIdx) where     __HIdx: Hasher,

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].

impl<Idx> PartialEq<RangeInclusive<Idx>> for RangeInclusive<Idx> where     Idx: PartialEq<Idx>,

fn eq(&self, __arg_0: &RangeInclusive<Idx>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &RangeInclusive<Idx>) -> bool

This method tests for !=.

impl<T> SliceIndex<[T]> for RangeInclusive<usize>

type Output = [T]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

The output type returned by methods.

fn get(self, slice: &[T]) -> Option<&[T]>

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a shared reference to the output at this location, if in bounds.

fn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a mutable reference to the output at this location, if in bounds.

Important traits for &'a [u8]

impl<'a> Read for &'a [u8]impl<'a> Write for &'a mut [u8]

unsafe fn get_unchecked(self, slice: &[T]) -> &[T]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a shared reference to the output at this location, without performing any bounds checking.

Important traits for &'a [u8]

impl<'a> Read for &'a [u8]impl<'a> Write for &'a mut [u8]

unsafe fn get_unchecked_mut(self, slice: &mut [T]) -> &mut [T]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a mutable reference to the output at this location, without performing any bounds checking.

Important traits for &'a [u8]

impl<'a> Read for &'a [u8]impl<'a> Write for &'a mut [u8]

fn index(self, slice: &[T]) -> &[T]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a shared reference to the output at this location, panicking if out of bounds.

Important traits for &'a [u8]

impl<'a> Read for &'a [u8]impl<'a> Write for &'a mut [u8]

fn index_mut(self, slice: &mut [T]) -> &mut [T]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a mutable reference to the output at this location, panicking if out of bounds.

impl SliceIndex<str> for RangeInclusive<usize>

type Output = str

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

The output type returned by methods.

fn get(     self,     slice: &str ) -> Option<&<RangeInclusive<usize> as SliceIndex<str>>::Output>

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a shared reference to the output at this location, if in bounds.

fn get_mut(     self,     slice: &mut str ) -> Option<&mut <RangeInclusive<usize> as SliceIndex<str>>::Output>

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a mutable reference to the output at this location, if in bounds.

Important traits for RangeInclusive<A>

impl<A> Iterator for RangeInclusive<A> where
    A: Step,  type Item = A;

unsafe fn get_unchecked(     self,     slice: &str ) -> &<RangeInclusive<usize> as SliceIndex<str>>::Output

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a shared reference to the output at this location, without performing any bounds checking.

Important traits for RangeInclusive<A>

impl<A> Iterator for RangeInclusive<A> where
    A: Step,  type Item = A;

unsafe fn get_unchecked_mut(     self,     slice: &mut str ) -> &mut <RangeInclusive<usize> as SliceIndex<str>>::Output

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a mutable reference to the output at this location, without performing any bounds checking.

Important traits for RangeInclusive<A>

impl<A> Iterator for RangeInclusive<A> where
    A: Step,  type Item = A;

fn index(     self,     slice: &str ) -> &<RangeInclusive<usize> as SliceIndex<str>>::Output

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a shared reference to the output at this location, panicking if out of bounds.

Important traits for RangeInclusive<A>

impl<A> Iterator for RangeInclusive<A> where
    A: Step,  type Item = A;

fn index_mut(     self,     slice: &mut str ) -> &mut <RangeInclusive<usize> as SliceIndex<str>>::Output

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a mutable reference to the output at this location, panicking if out of bounds.

impl<A> Iterator for RangeInclusive<A> where     A: Step,

type Item = A

The type of the elements being iterated over.

fn next(&mut self) -> Option<A>

Advances the iterator and returns the next value.

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the iterator.

fn nth(&mut self, n: usize) -> Option<A>

Returns the nth element of the iterator.

fn last(self) -> Option<A>

Consumes the iterator, returning the last element.

fn min(self) -> Option<A>

Returns the minimum element of an iterator.

fn max(self) -> Option<A>

Returns the maximum element of an iterator.

fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R where     F: FnMut(B, <RangeInclusive<A> as Iterator>::Item) -> R,     R: Try<Ok = B>,     RangeInclusive<A>: Sized,

🔬 This is a nightly-only experimental API. (iterator_try_fold #45594)

An iterator method that applies a function as long as it returns successfully, producing a single, final value.

fn count(self) -> usize

Consumes the iterator, counting the number of iterations and returning it.

Important traits for StepBy<I>

impl<I> Iterator for StepBy<I> where
    I: Iterator,  type Item = <I as Iterator>::Item;

fn step_by(self, step: usize) -> StepBy<Self>

🔬 This is a nightly-only experimental API. (iterator_step_by #27741)

unstable replacement of Range::step_by

Creates an iterator starting at the same point, but stepping by the given amount at each iteration.

Important traits for Chain<A, B>

impl<A, B> Iterator for Chain<A, B> where
    A: Iterator,
    B: Iterator<Item = <A as Iterator>::Item>,  type Item = <A as Iterator>::Item;

fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter> where     U: IntoIterator<Item = Self::Item>,

Takes two iterators and creates a new iterator over both in sequence.

Important traits for Zip<A, B>

impl<A, B> Iterator for Zip<A, B> where
    A: Iterator,
    B: Iterator,  type Item = (<A as Iterator>::Item, <B as Iterator>::Item);

fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter> where     U: IntoIterator,

'Zips up' two iterators into a single iterator of pairs.

Important traits for Map<I, F>

impl<B, I, F> Iterator for Map<I, F> where
    F: FnMut(<I as Iterator>::Item) -> B,
    I: Iterator,  type Item = B;

fn map<B, F>(self, f: F) -> Map<Self, F> where     F: FnMut(Self::Item) -> B,

Takes a closure and creates an iterator which calls that closure on each element.

fn for_each<F>(self, f: F) where     F: FnMut(Self::Item),

Calls a closure on each element of an iterator.

Important traits for Filter<I, P>

impl<I, P> Iterator for Filter<I, P> where
    I: Iterator,
    P: FnMut(&<I as Iterator>::Item) -> bool,  type Item = <I as Iterator>::Item;

fn filter<P>(self, predicate: P) -> Filter<Self, P> where     P: FnMut(&Self::Item) -> bool,

Creates an iterator which uses a closure to determine if an element should be yielded.

Important traits for FilterMap<I, F>

impl<B, I, F> Iterator for FilterMap<I, F> where
    F: FnMut(<I as Iterator>::Item) -> Option<B>,
    I: Iterator,  type Item = B;

fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F> where     F: FnMut(Self::Item) -> Option<B>,

Creates an iterator that both filters and maps.

Important traits for Enumerate<I>

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

fn enumerate(self) -> Enumerate<Self>

Creates an iterator which gives the current iteration count as well as the next value.

Important traits for Peekable<I>

impl<I> Iterator for Peekable<I> where
    I: Iterator,  type Item = <I as Iterator>::Item;

fn peekable(self) -> Peekable<Self>

Creates an iterator which can use peek to look at the next element of the iterator without consuming it.

Important traits for SkipWhile<I, P>

impl<I, P> Iterator for SkipWhile<I, P> where
    I: Iterator,
    P: FnMut(&<I as Iterator>::Item) -> bool,  type Item = <I as Iterator>::Item;

fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P> where     P: FnMut(&Self::Item) -> bool,

Creates an iterator that [skip]s elements based on a predicate.

Important traits for TakeWhile<I, P>

impl<I, P> Iterator for TakeWhile<I, P> where
    I: Iterator,
    P: FnMut(&<I as Iterator>::Item) -> bool,  type Item = <I as Iterator>::Item;

fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where     P: FnMut(&Self::Item) -> bool,

Creates an iterator that yields elements based on a predicate.

Important traits for Skip<I>

impl<I> Iterator for Skip<I> where
    I: Iterator,  type Item = <I as Iterator>::Item;

fn skip(self, n: usize) -> Skip<Self>

Creates an iterator that skips the first n elements.

Important traits for Take<I>

impl<I> Iterator for Take<I> where
    I: Iterator,  type Item = <I as Iterator>::Item;

fn take(self, n: usize) -> Take<Self>

Creates an iterator that yields its first n elements.

Important traits for Scan<I, St, F>

impl<B, I, St, F> Iterator for Scan<I, St, F> where
    F: FnMut(&mut St, <I as Iterator>::Item) -> Option<B>,
    I: Iterator,  type Item = B;

fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F> where     F: FnMut(&mut St, Self::Item) -> Option<B>,

An iterator adaptor similar to [fold] that holds internal state and produces a new iterator.

Important traits for FlatMap<I, U, F>

impl<I, U, F> Iterator for FlatMap<I, U, F> where
    F: FnMut(<I as Iterator>::Item) -> U,
    I: Iterator,
    U: IntoIterator,  type Item = <U as IntoIterator>::Item;

fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where     F: FnMut(Self::Item) -> U,     U: IntoIterator,

Creates an iterator that works like map, but flattens nested structure.

Important traits for Flatten<I>

impl<I, U> Iterator for Flatten<I> where
    I: Iterator,
    U: Iterator,
    <I as Iterator>::Item: IntoIterator,
    <<I as Iterator>::Item as IntoIterator>::IntoIter == U,
    <<I as Iterator>::Item as IntoIterator>::Item == <U as Iterator>::Item,  type Item = <U as Iterator>::Item;

fn flatten(self) -> Flatten<Self> where     Self::Item: IntoIterator,

🔬 This is a nightly-only experimental API. (iterator_flatten #48213)

Creates an iterator that flattens nested structure.

Important traits for Fuse<I>

impl<I> Iterator for Fuse<I> where
    I: FusedIterator, impl<I> Iterator for Fuse<I> where
    I: Iterator,  type Item = <I as Iterator>::Item;

fn fuse(self) -> Fuse<Self>

Creates an iterator which ends after the first [None].

Important traits for Inspect<I, F>

impl<I, F> Iterator for Inspect<I, F> where
    F: FnMut(&<I as Iterator>::Item),
    I: Iterator,  type Item = <I as Iterator>::Item;

fn inspect<F>(self, f: F) -> Inspect<Self, F> where     F: FnMut(&Self::Item),

Do something with each element of an iterator, passing the value on.

Important traits for &'a mut I

impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;impl<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W

fn by_ref(&mut self) -> &mut Self

Borrows an iterator, rather than consuming it.

fn collect<B>(self) -> B where     B: FromIterator<Self::Item>,

Transforms an iterator into a collection.

fn partition<B, F>(self, f: F) -> (B, B) where     B: Default + Extend<Self::Item>,     F: FnMut(&Self::Item) -> bool,

Consumes an iterator, creating two collections from it.

fn try_for_each<F, R>(&mut self, f: F) -> R where     F: FnMut(Self::Item) -> R,     R: Try<Ok = ()>,

🔬 This is a nightly-only experimental API. (iterator_try_fold #45594)

An iterator method that applies a fallible function to each item in the iterator, stopping at the first error and returning that error.

fn fold<B, F>(self, init: B, f: F) -> B where     F: FnMut(B, Self::Item) -> B,

An iterator method that applies a function, producing a single, final value.

fn all<F>(&mut self, f: F) -> bool where     F: FnMut(Self::Item) -> bool,

Tests if every element of the iterator matches a predicate.

fn any<F>(&mut self, f: F) -> bool where     F: FnMut(Self::Item) -> bool,

Tests if any element of the iterator matches a predicate.

fn find<P>(&mut self, predicate: P) -> Option<Self::Item> where     P: FnMut(&Self::Item) -> bool,

Searches for an element of an iterator that satisfies a predicate.

fn position<P>(&mut self, predicate: P) -> Option<usize> where     P: FnMut(Self::Item) -> bool,

Searches for an element in an iterator, returning its index.

fn rposition<P>(&mut self, predicate: P) -> Option<usize> where     P: FnMut(Self::Item) -> bool,     Self: ExactSizeIterator + DoubleEndedIterator,

Searches for an element in an iterator from the right, returning its index.

fn max_by_key<B, F>(self, f: F) -> Option<Self::Item> where     B: Ord,     F: FnMut(&Self::Item) -> B,

Returns the element that gives the maximum value from the specified function.

fn max_by<F>(self, compare: F) -> Option<Self::Item> where     F: FnMut(&Self::Item, &Self::Item) -> Ordering,

Returns the element that gives the maximum value with respect to the specified comparison function.

fn min_by_key<B, F>(self, f: F) -> Option<Self::Item> where     B: Ord,     F: FnMut(&Self::Item) -> B,

Returns the element that gives the minimum value from the specified function.

fn min_by<F>(self, compare: F) -> Option<Self::Item> where     F: FnMut(&Self::Item, &Self::Item) -> Ordering,

Returns the element that gives the minimum value with respect to the specified comparison function.

Important traits for Rev<I>

impl<I> Iterator for Rev<I> where
    I: DoubleEndedIterator,  type Item = <I as Iterator>::Item;

fn rev(self) -> Rev<Self> where     Self: DoubleEndedIterator,

Reverses an iterator's direction.

fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB) where     FromA: Default + Extend<A>,     FromB: Default + Extend<B>,     Self: Iterator<Item = (A, B)>,

Converts an iterator of pairs into a pair of containers.

Important traits for Cloned<I>

impl<'a, I, T> Iterator for Cloned<I> where
    I: Iterator<Item = &'a T>,
    T: 'a + Clone,  type Item = T;

fn cloned<'a, T>(self) -> Cloned<Self> where     Self: Iterator<Item = &'a T>,     T: 'a + Clone,

Creates an iterator which [clone]s all of its elements.

Important traits for Cycle<I>

impl<I> Iterator for Cycle<I> where
    I: Clone + Iterator,  type Item = <I as Iterator>::Item;

fn cycle(self) -> Cycle<Self> where     Self: Clone,

Repeats an iterator endlessly.

fn sum<S>(self) -> S where     S: Sum<Self::Item>,

Sums the elements of an iterator.

fn product<P>(self) -> P where     P: Product<Self::Item>,

Iterates over the entire iterator, multiplying all the elements

fn cmp<I>(self, other: I) -> Ordering where     I: IntoIterator<Item = Self::Item>,     Self::Item: Ord,

Lexicographically compares the elements of this Iterator with those of another.

fn partial_cmp<I>(self, other: I) -> Option<Ordering> where     I: IntoIterator,     Self::Item: PartialOrd<<I as IntoIterator>::Item>,

Lexicographically compares the elements of this Iterator with those of another.

fn eq<I>(self, other: I) -> bool where     I: IntoIterator,     Self::Item: PartialEq<<I as IntoIterator>::Item>,

Determines if the elements of this Iterator are equal to those of another.

fn ne<I>(self, other: I) -> bool where     I: IntoIterator,     Self::Item: PartialEq<<I as IntoIterator>::Item>,

Determines if the elements of this Iterator are unequal to those of another.

fn lt<I>(self, other: I) -> bool where     I: IntoIterator,     Self::Item: PartialOrd<<I as IntoIterator>::Item>,

Determines if the elements of this Iterator are lexicographically less than those of another.

fn le<I>(self, other: I) -> bool where     I: IntoIterator,     Self::Item: PartialOrd<<I as IntoIterator>::Item>,

Determines if the elements of this Iterator are lexicographically less or equal to those of another.

fn gt<I>(self, other: I) -> bool where     I: IntoIterator,     Self::Item: PartialOrd<<I as IntoIterator>::Item>,

Determines if the elements of this Iterator are lexicographically greater than those of another.

fn ge<I>(self, other: I) -> bool where     I: IntoIterator,     Self::Item: PartialOrd<<I as IntoIterator>::Item>,

Determines if the elements of this Iterator are lexicographically greater than or equal to those of another.

impl TrustedLen for RangeInclusive<usize>

impl TrustedLen for RangeInclusive<i16>

impl TrustedLen for RangeInclusive<u16>

impl TrustedLen for RangeInclusive<isize>

impl TrustedLen for RangeInclusive<i8>

impl TrustedLen for RangeInclusive<i64>

impl TrustedLen for RangeInclusive<u8>

impl TrustedLen for RangeInclusive<u32>

impl TrustedLen for RangeInclusive<u64>

impl TrustedLen for RangeInclusive<i32>

impl<Idx> Clone for RangeInclusive<Idx> where     Idx: Clone,

Important traits for RangeInclusive<A>

impl<A> Iterator for RangeInclusive<A> where
    A: Step,  type Item = A;

fn clone(&self) -> RangeInclusive<Idx>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl IndexMut<RangeInclusive<usize>> for str

fn index_mut(&mut self, index: RangeInclusive<usize>) -> &mut str

Performs the mutable indexing (container[index]) operation.

impl<Idx> Eq for RangeInclusive<Idx> where     Idx: Eq,

impl<'a, T> RangeBounds<T> for RangeInclusive<&'a T>

fn start(&self) -> Bound<&T>

🔬 This is a nightly-only experimental API. (collections_range #30877)

might be replaced with Into<_> and a type containing two Bound values

Start index bound.

fn end(&self) -> Bound<&T>

🔬 This is a nightly-only experimental API. (collections_range #30877)

might be replaced with Into<_> and a type containing two Bound values

End index bound.

impl<T> RangeBounds<T> for RangeInclusive<T>

fn start(&self) -> Bound<&T>

🔬 This is a nightly-only experimental API. (collections_range #30877)

might be replaced with Into<_> and a type containing two Bound values

Start index bound.

fn end(&self) -> Bound<&T>

🔬 This is a nightly-only experimental API. (collections_range #30877)

might be replaced with Into<_> and a type containing two Bound values

End index bound.

impl Index<RangeInclusive<usize>> for String

type Output = str

The returned type after indexing.

fn index(&self, index: RangeInclusive<usize>) -> &str

Performs the indexing (container[index]) operation.

impl IndexMut<RangeInclusive<usize>> for String

fn index_mut(&mut self, index: RangeInclusive<usize>) -> &mut str

Performs the mutable indexing (container[index]) operation.