Struct core::ops::Range1.0.0 [] [src]

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.

Examples

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

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

Fields

The lower bound of the range (inclusive).

The upper bound of the range (exclusive).

Methods

impl<Idx: PartialOrd<Idx>> Range<Idx>
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🔬 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..3).contains(3));
assert!(!(3..2).contains(3));Run

Trait Implementations

impl<Idx: Clone> Clone for Range<Idx>
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Returns a copy of the value. Read more

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Performs copy-assignment from source. Read more

impl<Idx: PartialEq> PartialEq for Range<Idx>
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This method tests for self and other values to be equal, and is used by ==. Read more

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This method tests for !=.

impl<Idx: Eq> Eq for Range<Idx>
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impl<Idx: Hash> Hash for Range<Idx>
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Feeds this value into the given [Hasher]. Read more

1.3.0
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Feeds a slice of this type into the given [Hasher]. Read more

impl<Idx: Debug> Debug for Range<Idx>
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Formats the value using the given formatter.

impl<A: Step> Iterator for Range<A>
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The type of the elements being iterated over.

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Advances the iterator and returns the next value. Read more

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

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Returns the nth element of the iterator. Read more

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

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Consumes the iterator, returning the last element. Read more

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🔬 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. Read more

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

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

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

1.21.0
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Calls a closure on each element of an iterator. Read more

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

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Creates an iterator that both filters and maps. Read more

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

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

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

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

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

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

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

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

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

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

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Borrows an iterator, rather than consuming it. Read more

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Transforms an iterator into a collection. Read more

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

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

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

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

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

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

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

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Returns the maximum element of an iterator. Read more

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Returns the minimum element of an iterator. Read more

1.6.0
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Returns the element that gives the maximum value from the specified function. Read more

1.15.0
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Returns the element that gives the maximum value with respect to the specified comparison function. Read more

1.6.0
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Returns the element that gives the minimum value from the specified function. Read more

1.15.0
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Returns the element that gives the minimum value with respect to the specified comparison function. Read more

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Reverses an iterator's direction. Read more

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

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

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Repeats an iterator endlessly. Read more

1.11.0
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Sums the elements of an iterator. Read more

1.11.0
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Iterates over the entire iterator, multiplying all the elements Read more

1.5.0
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Lexicographically compares the elements of this Iterator with those of another. Read more

1.5.0
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Lexicographically compares the elements of this Iterator with those of another. Read more

1.5.0
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Determines if the elements of this Iterator are equal to those of another. Read more

1.5.0
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Determines if the elements of this Iterator are unequal to those of another. Read more

1.5.0
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Determines if the elements of this Iterator are lexicographically less than those of another. Read more

1.5.0
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Determines if the elements of this Iterator are lexicographically less or equal to those of another. Read more

1.5.0
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Determines if the elements of this Iterator are lexicographically greater than those of another. Read more

1.5.0
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Determines if the elements of this Iterator are lexicographically greater than or equal to those of another. Read more

impl ExactSizeIterator for Range<usize>
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Returns the exact number of times the iterator will iterate. Read more

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

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

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

Returns whether the iterator is empty. Read more

impl ExactSizeIterator for Range<u32>
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Returns the exact number of times the iterator will iterate. Read more

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

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

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

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

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

Returns whether the iterator is empty. Read more

impl TrustedLen for Range<usize>
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impl TrustedLen for Range<isize>
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impl TrustedLen for Range<u8>
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impl TrustedLen for Range<i8>
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impl TrustedLen for Range<u16>
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impl TrustedLen for Range<i16>
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impl TrustedLen for Range<u32>
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impl TrustedLen for Range<i32>
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impl TrustedLen for Range<i64>
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impl TrustedLen for Range<u64>
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impl<A: Step> DoubleEndedIterator for Range<A>
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Removes and returns an element from the end of the iterator. Read more

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🔬 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. Read more

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

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

impl<A: Step> FusedIterator for Range<A>
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impl<T> SliceIndex<[T]> for Range<usize>
1.15.0
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🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

The output type returned by methods.

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

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

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

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

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🔬 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. Read more

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🔬 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. Read more

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🔬 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. Read more

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🔬 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. Read more

impl Index<Range<usize>> for str
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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

The returned type after indexing.

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Performs the indexing (container[index]) operation.

impl IndexMut<Range<usize>> for str
1.3.0
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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.

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

impl SliceIndex<str> for Range<usize>
1.20.0
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🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

The output type returned by methods.

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

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

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

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

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🔬 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. Read more

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🔬 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. Read more

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🔬 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. Read more

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🔬 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. Read more