std::ops::Range - Rust
Description: API documentation for the Rust `Range` struct in crate `std`.
Keywords: rust, rustlang, rust-lang, Range

# 1.0.0[−][src]Struct std::ops::Range

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

A (half-open) range bounded inclusively below and exclusively above (`start..end`).

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

# Examples

    assert_eq!((3..5), std::ops::Range { start: 3, end: 5 });
    assert_eq!(3 + 4 + 5, (3..6).sum());

    let arr = ['a', 'b', 'c', 'd'];
    assert_eq!(arr[ .. ], ['a', 'b', 'c', 'd']);
    assert_eq!(arr[ ..3], ['a', 'b', 'c',    ]);
    assert_eq!(arr[1.. ], [     'b', 'c', 'd']);
    assert_eq!(arr[1..3], [     'b', 'c'     ]);  // RangeRun

## Fields

`start: Idx`

The lower bound of the range (inclusive).

`end: Idx`

The upper bound of the range (exclusive).

## Methods

###

`impl<Idx> Range<Idx> where Idx: PartialOrd<Idx>,`

[src]

####

`pub fn contains<U>(&self, item: &U) -> bool where Idx: PartialOrd<U>, U: PartialOrd<Idx> + ?Sized,`

[src]

🔬 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)]

    use std::f32;

    assert!(!(3..5).contains(&2));
    assert!( (3..5).contains(&3));
    assert!( (3..5).contains(&4));
    assert!(!(3..5).contains(&5));

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

    assert!( (0.0..1.0).contains(&0.5));
    assert!(!(0.0..1.0).contains(&f32::NAN));
    assert!(!(0.0..f32::NAN).contains(&0.5));
    assert!(!(f32::NAN..1.0).contains(&0.5));Run

####

`pub fn is_empty(&self) -> bool`

[src]

🔬 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());Run

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());Run

## Trait Implementations

###

`impl Index<Range<usize>> for str`

[src]

Implements substring slicing with syntax `&self[begin .. end]`.

Returns a slice of the given string from the byte range [`begin`..`end`).

This operation is `O(1)`.

# Panics

Panics if `begin` or `end` does not point to the starting byte offset of a character (as defined by `is_char_boundary`). Requires that `begin <= end` and `end <= len` where `len` is the length of the string.

# Examples

    let s = "Löwe 老虎 Léopard";
    assert_eq!(&s[0 .. 1], "L");

    assert_eq!(&s[1 .. 9], "öwe 老");

    // these will panic:
    // byte 2 lies within `ö`:
    // &s[2 ..3];

    // byte 8 lies within `老`
    // &s[1 .. 8];

    // byte 100 is outside the string
    // &s[3 .. 100];Run

#### `type Output = str`

The returned type after indexing.

####

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

[src]

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

###

`impl ExactSizeIterator for Range<u32>`

[src]

####

`fn len(&self) -> usize`

[src]

Returns the exact number of times the iterator will iterate. Read more

####

`fn is_empty(&self) -> bool`

[src]

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

Returns whether the iterator is empty. Read more

###

`impl ExactSizeIterator for Range<i32>`

[src]

####

`fn len(&self) -> usize`

[src]

Returns the exact number of times the iterator will iterate. Read more

####

`fn is_empty(&self) -> bool`

[src]

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

Returns whether the iterator is empty. Read more

###

`impl ExactSizeIterator for Range<i8>`

[src]

####

`fn len(&self) -> usize`

[src]

Returns the exact number of times the iterator will iterate. Read more

####

`fn is_empty(&self) -> bool`

[src]

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

Returns whether the iterator is empty. Read more

###

`impl ExactSizeIterator for Range<usize>`

[src]

####

`fn len(&self) -> usize`

[src]

Returns the exact number of times the iterator will iterate. Read more

####

`fn is_empty(&self) -> bool`

[src]

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

Returns whether the iterator is empty. Read more

###

`impl ExactSizeIterator for Range<i16>`

[src]

####

`fn len(&self) -> usize`

[src]

Returns the exact number of times the iterator will iterate. Read more

####

`fn is_empty(&self) -> bool`

[src]

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

Returns whether the iterator is empty. Read more

###

`impl ExactSizeIterator for Range<u8>`

[src]

####

`fn len(&self) -> usize`

[src]

Returns the exact number of times the iterator will iterate. Read more

####

`fn is_empty(&self) -> bool`

[src]

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

Returns whether the iterator is empty. Read more

###

`impl ExactSizeIterator for Range<u16>`

[src]

####

`fn len(&self) -> usize`

[src]

Returns the exact number of times the iterator will iterate. Read more

####

`fn is_empty(&self) -> bool`

[src]

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

Returns whether the iterator is empty. Read more

###

`impl ExactSizeIterator for Range<isize>`

[src]

####

`fn len(&self) -> usize`

[src]

Returns the exact number of times the iterator will iterate. Read more

####

`fn is_empty(&self) -> bool`

[src]

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

Returns whether the iterator is empty. Read more

###

`impl TrustedLen for Range<u8>`

[src]

###

`impl TrustedLen for Range<u64>`

[src]

###

`impl TrustedLen for Range<i32>`

[src]

###

`impl TrustedLen for Range<u32>`

[src]

###

`impl TrustedLen for Range<isize>`

[src]

###

`impl TrustedLen for Range<i8>`

[src]

###

`impl TrustedLen for Range<usize>`

[src]

###

`impl TrustedLen for Range<i16>`

[src]

###

`impl TrustedLen for Range<i64>`

[src]

###

`impl TrustedLen for Range<u16>`

[src]

###

`impl<A> FusedIterator for Range<A> where A: Step,`

1.26.0
[src]

###

`impl<A> Iterator for Range<A> where A: Step,`

[src]

#### `type Item = A`

The type of the elements being iterated over.

####

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

[src]

Advances the iterator and returns the next value. Read more

####

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

[src]

Returns the bounds on the remaining length of the iterator. Read more

####

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

[src]

Returns the `n`th element of the iterator. Read more

####

`fn last(self) -> Option<A>`

[src]

Consumes the iterator, returning the last element. Read more

####

`fn min(self) -> Option<A>`

[src]

Returns the minimum element of an iterator. Read more

####

`fn max(self) -> Option<A>`

[src]

Returns the maximum element of an iterator. Read more

####

`fn count(self) -> usize`

[src]

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

####
ⓘImportant traits for StepBy<I>

### 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>`

1.28.0
[src]

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

####
ⓘImportant traits for Chain<A, B>

### 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>,`

[src]

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

####
ⓘImportant traits for Zip<A, B>

### 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,`

[src]

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

####
ⓘImportant traits for Map<I, F>

### 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,`

[src]

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

####

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

1.21.0
[src]

Calls a closure on each element of an iterator. Read more

####
ⓘImportant traits for Filter<I, P>

### 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,`

[src]

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

####
ⓘImportant traits for FilterMap<I, F>

### 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>,`

[src]

Creates an iterator that both filters and maps. Read more

####
ⓘImportant traits for Enumerate<I>

### 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>`

[src]

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

####
ⓘImportant traits for Peekable<I>

### 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>`

[src]

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

####
ⓘImportant traits for SkipWhile<I, P>

### 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,`

[src]

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

####
ⓘImportant traits for TakeWhile<I, P>

### 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,`

[src]

Creates an iterator that yields elements based on a predicate. Read more

####
ⓘImportant traits for Skip<I>

### 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>`

[src]

Creates an iterator that skips the first `n` elements. Read more

####
ⓘImportant traits for Take<I>

### 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>`

[src]

Creates an iterator that yields its first `n` elements. Read more

####
ⓘImportant traits for Scan<I, St, F>

### 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>,`

[src]

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

####
ⓘImportant traits for FlatMap<I, U, F>

### 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,`

[src]

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

####
ⓘImportant traits for Flatten<I>

### 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,`

1.29.0
[src]

Creates an iterator that flattens nested structure. Read more

####
ⓘImportant traits for Fuse<I>

### 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>`

[src]

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

####
ⓘImportant traits for Inspect<I, F>

### 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),`

[src]

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

####
ⓘImportant traits for &'_ mut I

### Important traits for &'_ mut I

`impl<'_, I> Iterator for &'_ 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`

[src]

Borrows an iterator, rather than consuming it. Read more

####

`#[must_use = "if you really need to exhaust the iterator, consider `.for_each(drop)` instead"] fn collect<B>(self) -> B where B: FromIterator<Self::Item>,`

[src]

Transforms an iterator into a collection. Read more

####

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

[src]

Consumes an iterator, creating two collections from it. Read more

####

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

1.27.0
[src]

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

####

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

1.27.0
[src]

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

####

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

[src]

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

####

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

[src]

Tests if every element of the iterator matches a predicate. Read more

####

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

[src]

Tests if any element of the iterator matches a predicate. Read more

####

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

[src]

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

####

`fn find_map<B, F>(&mut self, f: F) -> Option<B> where F: FnMut(Self::Item) -> Option<B>,`

1.30.0
[src]

Applies function to the elements of iterator and returns the first non-none result. Read more

####

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

[src]

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

####

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

[src]

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

####

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

1.6.0
[src]

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

####

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

1.15.0
[src]

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

####

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

1.6.0
[src]

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

####

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

1.15.0
[src]

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

####
ⓘImportant traits for Rev<I>

### 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,`

[src]

Reverses an iterator's direction. Read more

####

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

[src]

Converts an iterator of pairs into a pair of containers. Read more

####
ⓘImportant traits for Cloned<I>

### 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,`

[src]

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

####
ⓘImportant traits for Cycle<I>

### 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,`

[src]

Repeats an iterator endlessly. Read more

####

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

1.11.0
[src]

Sums the elements of an iterator. Read more

####

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

1.11.0
[src]

Iterates over the entire iterator, multiplying all the elements Read more

####

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

1.5.0
[src]

Lexicographically compares the elements of this `Iterator` with those of another. Read more

####

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

1.5.0
[src]

Lexicographically compares the elements of this `Iterator` with those of another. Read more

####

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

1.5.0
[src]

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

####

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

1.5.0
[src]

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

####

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

1.5.0
[src]

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

####

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

1.5.0
[src]

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

####

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

1.5.0
[src]

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

####

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

1.5.0
[src]

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

###

`impl<Idx> Hash for Range<Idx> where Idx: Hash,`

[src]

####

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

[src]

Feeds this value into the given [`Hasher`]. Read more

####

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

1.3.0
[src]

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

###

`impl<Idx> Eq for Range<Idx> where Idx: Eq,`

[src]

###

`impl<Idx> Clone for Range<Idx> where Idx: Clone,`

[src]

####
ⓘImportant traits for Range<A>

### Important traits for Range<A>

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

`fn clone(&self) -> Range<Idx>`

[src]

Returns a copy of the value. Read more

####

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

[src]

Performs copy-assignment from `source`. Read more

###

`impl<T> RangeBounds<T> for Range<T>`

1.28.0
[src]

####

`fn start_bound(&self) -> Bound<&T>`

[src]

Start index bound. Read more

####

`fn end_bound(&self) -> Bound<&T>`

[src]

End index bound. Read more

####

`fn contains<U>(&self, item: &U) -> bool where T: PartialOrd<U>, U: PartialOrd<T> + ?Sized,`

[src]

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

recently added as per RFC

Returns `true` if `item` is contained in the range. Read more

###

`impl<'_, T> RangeBounds<T> for Range<&'_ T>`

1.28.0
[src]

####

`fn start_bound(&self) -> Bound<&T>`

[src]

Start index bound. Read more

####

`fn end_bound(&self) -> Bound<&T>`

[src]

End index bound. Read more

####

`fn contains<U>(&self, item: &U) -> bool where T: PartialOrd<U>, U: PartialOrd<T> + ?Sized,`

[src]

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

recently added as per RFC

Returns `true` if `item` is contained in the range. Read more

###

`impl<Idx> Debug for Range<Idx> where Idx: Debug,`

[src]

####

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

[src]

Formats the value using the given formatter. Read more

###

`impl IndexMut<Range<usize>> for str`

1.3.0
[src]

Implements mutable substring slicing with syntax `&mut self[begin .. end]`.

Returns a mutable slice of the given string from the byte range [`begin`..`end`).

This operation is `O(1)`.

# Panics

Panics if `begin` or `end` does not point to the starting byte offset of a character (as defined by `is_char_boundary`). Requires that `begin <= end` and `end <= len` where `len` is the length of the string.

####

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

[src]

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

###

`impl<Idx> PartialEq<Range<Idx>> for Range<Idx> where Idx: PartialEq<Idx>,`

[src]

####

`fn eq(&self, other: &Range<Idx>) -> bool`

[src]

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

####

`fn ne(&self, other: &Range<Idx>) -> bool`

[src]

This method tests for `!=`.

###

`impl<A> DoubleEndedIterator for Range<A> where A: Step,`

[src]

####

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

[src]

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

####

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

1.27.0
[src]

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

####

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

1.27.0
[src]

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

####

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

1.27.0
[src]

Searches for an element of an iterator from the back that satisfies a predicate. Read more

###

`impl SliceIndex<str> for Range<usize>`

1.20.0
[src]

#### `type Output = str`

The output type returned by methods.

####

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

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

####

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

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

####
ⓘImportant traits for Range<A>

### Important traits for Range<A>

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

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

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

####
ⓘImportant traits for Range<A>

### Important traits for Range<A>

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

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

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

####
ⓘImportant traits for Range<A>

### Important traits for Range<A>

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

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

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

####
ⓘImportant traits for Range<A>

### Important traits for Range<A>

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

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

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

###

`impl<T> SliceIndex<[T]> for Range<usize>`

1.15.0
[src]

#### `type Output = [T]`

The output type returned by methods.

####

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

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

####

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

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

####
ⓘImportant traits for &'a [u8]

### 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]`

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

####
ⓘImportant traits for &'a [u8]

### 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]`

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

####
ⓘImportant traits for &'a [u8]

### Important traits for &'a [u8]

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

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

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

####
ⓘImportant traits for &'a [u8]

### 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]`

[src]

🔬 This is a nightly-only experimental API. (`slice_index_methods`)

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

###

`impl Index<Range<usize>> for String`

[src]

#### `type Output = str`

The returned type after indexing.

####

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

[src]

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

###

`impl IndexMut<Range<usize>> for String`

1.3.0
[src]

####

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

[src]

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

## Auto Trait Implementations

###

`impl<Idx> Send for Range<Idx> where Idx: Send,`

###

`impl<Idx> Sync for Range<Idx> where Idx: Sync,`

## Blanket Implementations

###

`impl<T> From for T`

[src]

####

`fn from(t: T) -> T`

[src]

Performs the conversion.

###

`impl<I> IntoIterator for I where I: Iterator,`

[src]

#### `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?

####

`fn into_iter(self) -> I`

[src]

Creates an iterator from a value. Read more

###

`impl<T, U> TryFrom for T where T: From<U>,`

[src]

#### `type Error = !`

🔬 This is a nightly-only experimental API. (`try_from` #33417)

The type returned in the event of a conversion error.

####

`fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`

[src]

🔬 This is a nightly-only experimental API. (`try_from` #33417)

Performs the conversion.

###

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

[src]

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

🔬 This is a nightly-only experimental API. (`try_from` #33417)

The type returned in the event of a conversion error.

####

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

[src]

🔬 This is a nightly-only experimental API. (`try_from` #33417)

Performs the conversion.

###

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

[src]

####

`fn into(self) -> U`

[src]

Performs the conversion.

###

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

[src]

####
ⓘImportant traits for &'_ mut I

### Important traits for &'_ mut I

`impl<'_, I> Iterator for &'_ 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 borrow(&self) -> &T`

[src]

Immutably borrows from an owned value. Read more

###

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

[src]

####
ⓘImportant traits for &'_ mut I

### Important traits for &'_ mut I

`impl<'_, I> Iterator for &'_ 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 borrow_mut(&mut self) -> &mut T`

[src]

Mutably borrows from an owned value. Read more

###

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

[src]

####

`fn get_type_id(&self) -> TypeId`

[src]

🔬 This is a nightly-only experimental API. (`get_type_id` #27745)

this method will likely be replaced by an associated static

Gets the `TypeId` of `self`. Read more

###

`impl<T> ToOwned for T where T: Clone,`

[src]

#### `type Owned = T`

####

`fn to_owned(&self) -> T`

[src]

Creates owned data from borrowed data, usually by cloning. Read more

####

`fn clone_into(&self, target: &mut T)`

[src]

🔬 This is a nightly-only experimental API. (`toowned_clone_into` #41263)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

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