RangeInclusive in core::range

RangeInclusive in core::range - Rust

Struct RangeInclusive

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

🔬This is a nightly-only experimental API. (new_range_api #125687)

Expand description

A range bounded inclusively below and above (start..=last).

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

§Examples

The start..=last syntax is a RangeInclusive:

#![feature(new_range_api)]
use core::range::RangeInclusive;

assert_eq!(RangeInclusive::from(3..=5), RangeInclusive { start: 3, last: 5 });
assert_eq!(3 + 4 + 5, RangeInclusive::from(3..=5).into_iter().sum());

🔬This is a nightly-only experimental API. (new_range_api #125687)

The lower bound of the range (inclusive).

🔬This is a nightly-only experimental API. (new_range_api #125687)

The upper bound of the range (inclusive).

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🔬This is a nightly-only experimental API. (new_range_api #125687)

Returns true if item is contained in the range.

§Examples

#![feature(new_range_api)]
use core::range::RangeInclusive;

assert!(!RangeInclusive::from(3..=5).contains(&2));
assert!( RangeInclusive::from(3..=5).contains(&3));
assert!( RangeInclusive::from(3..=5).contains(&4));
assert!( RangeInclusive::from(3..=5).contains(&5));
assert!(!RangeInclusive::from(3..=5).contains(&6));

assert!( RangeInclusive::from(3..=3).contains(&3));
assert!(!RangeInclusive::from(3..=2).contains(&3));

assert!( RangeInclusive::from(0.0..=1.0).contains(&1.0));
assert!(!RangeInclusive::from(0.0..=1.0).contains(&f32::NAN));
assert!(!RangeInclusive::from(0.0..=f32::NAN).contains(&0.0));
assert!(!RangeInclusive::from(f32::NAN..=1.0).contains(&1.0));

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🔬This is a nightly-only experimental API. (new_range_api #125687)

Returns true if the range contains no items.

§Examples

#![feature(new_range_api)]
use core::range::RangeInclusive;

assert!(!RangeInclusive::from(3..=5).is_empty());
assert!(!RangeInclusive::from(3..=3).is_empty());
assert!( RangeInclusive::from(3..=2).is_empty());

The range is empty if either side is incomparable:

#![feature(new_range_api)]
use core::range::RangeInclusive;

assert!(!RangeInclusive::from(3.0..=5.0).is_empty());
assert!( RangeInclusive::from(3.0..=f32::NAN).is_empty());
assert!( RangeInclusive::from(f32::NAN..=5.0).is_empty());

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🔬This is a nightly-only experimental API. (new_range_api #125687)

Creates an iterator over the elements within this range.

Shorthand for .clone().into_iter()

§Examples

#![feature(new_range_api)]
use core::range::RangeInclusive;

let mut i = RangeInclusive::from(3..=8).iter().map(|n| n*n);
assert_eq!(i.next(), Some(9));
assert_eq!(i.next(), Some(16));
assert_eq!(i.next(), Some(25));

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Converts to this type from the input type.

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Converts to this type from the input type.

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

Returns true if self is in bounds for len slice elements.

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

Returns true if self overlaps with other. Read more

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🔬This is a nightly-only experimental API. (range_into_bounds #136903)

Convert this range into the start and end bounds. Returns (start_bound, end_bound). Read more

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🔬This is a nightly-only experimental API. (range_into_bounds #136903)

Compute the intersection of self and other. Read more

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The type of the elements being iterated over.

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Which kind of iterator are we turning this into?

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Creates an iterator from a value. Read more

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Tests for self and other values to be equal, and is used by ==.

1.0.0 · Source§

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

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If you need to use this implementation where T is unsized, consider using the RangeBounds impl for a 2-tuple of Bound<&T>, i.e. replace start..=end with (Bound::Included(start), Bound::Included(end)).

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1.35.0 · Source§

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

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🔬This is a nightly-only experimental API. (range_bounds_is_empty #137300)

Returns true if the range contains no items. One-sided ranges (RangeFrom, etc) always return false. Read more

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1.35.0 · Source§

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

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🔬This is a nightly-only experimental API. (range_bounds_is_empty #137300)

Returns true if the range contains no items. One-sided ranges (RangeFrom, etc) always return false. Read more

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The output type returned by methods.

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