pub struct Range<Idx> {
pub start: Idx,
pub end: Idx,
}
๐ฌThis is a nightly-only experimental API. (
new_range_api
)Expand description
A (half-open) range bounded inclusively below and exclusively above
(start..end
in a future edition).
The range start..end
contains all values with start <= x < end
.
It is empty if start >= end
.
ยงExamples
#![feature(new_range_api)]
use core::range::Range;
assert_eq!(Range::from(3..5), Range { start: 3, end: 5 });
assert_eq!(3 + 4 + 5, Range::from(3..6).into_iter().sum());
Fieldsยง
ยงstart: Idx
๐ฌThis is a nightly-only experimental API. (
new_range_api
)The lower bound of the range (inclusive).
end: Idx
๐ฌThis is a nightly-only experimental API. (
new_range_api
)The upper bound of the range (exclusive).
Implementationsยง
sourceยงimpl<Idx> Range<Idx>where
Idx: Step,
impl<Idx> Range<Idx>where
Idx: Step,
sourcepub fn iter(&self) -> IterRange<Idx> โ
๐ฌThis is a nightly-only experimental API. (new_range_api
)
pub fn iter(&self) -> IterRange<Idx> โ
new_range_api
)Creates an iterator over the elements within this range.
Shorthand for .clone().into_iter()
ยงExamples
#![feature(new_range_api)]
use core::range::Range;
let mut i = Range::from(3..9).iter().map(|n| n*n);
assert_eq!(i.next(), Some(9));
assert_eq!(i.next(), Some(16));
assert_eq!(i.next(), Some(25));
sourceยงimpl<Idx> Range<Idx>where
Idx: PartialOrd,
impl<Idx> Range<Idx>where
Idx: PartialOrd,
sourcepub fn contains<U>(&self, item: &U) -> bool
๐ฌThis is a nightly-only experimental API. (new_range_api
)
pub fn contains<U>(&self, item: &U) -> bool
new_range_api
)Returns true
if item
is contained in the range.
ยงExamples
#![feature(new_range_api)]
use core::range::Range;
assert!(!Range::from(3..5).contains(&2));
assert!( Range::from(3..5).contains(&3));
assert!( Range::from(3..5).contains(&4));
assert!(!Range::from(3..5).contains(&5));
assert!(!Range::from(3..3).contains(&3));
assert!(!Range::from(3..2).contains(&3));
assert!( Range::from(0.0..1.0).contains(&0.5));
assert!(!Range::from(0.0..1.0).contains(&f32::NAN));
assert!(!Range::from(0.0..f32::NAN).contains(&0.5));
assert!(!Range::from(f32::NAN..1.0).contains(&0.5));
sourcepub fn is_empty(&self) -> bool
๐ฌThis is a nightly-only experimental API. (new_range_api
)
pub fn is_empty(&self) -> bool
new_range_api
)Returns true
if the range contains no items.
ยงExamples
#![feature(new_range_api)]
use core::range::Range;
assert!(!Range::from(3..5).is_empty());
assert!( Range::from(3..3).is_empty());
assert!( Range::from(3..2).is_empty());
The range is empty if either side is incomparable:
#![feature(new_range_api)]
use core::range::Range;
assert!(!Range::from(3.0..5.0).is_empty());
assert!( Range::from(3.0..f32::NAN).is_empty());
assert!( Range::from(f32::NAN..5.0).is_empty());
Trait Implementationsยง
sourceยงimpl<A> IntoIterator for Range<A>where
A: Step,
impl<A> IntoIterator for Range<A>where
A: Step,
sourceยงimpl<T> RangeBounds<T> for Range<&T>
impl<T> RangeBounds<T> for Range<&T>
sourceยงimpl<T> RangeBounds<T> for Range<T>
impl<T> RangeBounds<T> for Range<T>
sourceยงimpl<T> SliceIndex<[T]> for Range<usize>
impl<T> SliceIndex<[T]> for Range<usize>
sourceยงfn get(self, slice: &[T]) -> Option<&[T]>
fn get(self, slice: &[T]) -> Option<&[T]>
๐ฌThis is a nightly-only experimental API. (
slice_index_methods
)Returns a shared reference to the output at this location, if in
bounds.
sourceยงfn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>
fn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>
๐ฌThis is a nightly-only experimental API. (
slice_index_methods
)Returns a mutable reference to the output at this location, if in
bounds.
sourceยงunsafe fn get_unchecked(self, slice: *const [T]) -> *const [T]
unsafe fn get_unchecked(self, slice: *const [T]) -> *const [T]
๐ฌThis is a nightly-only experimental API. (
slice_index_methods
)Returns a pointer to the output at this location, without
performing any bounds checking. Read more
sourceยงunsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut [T]
unsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut [T]
๐ฌThis is a nightly-only experimental API. (
slice_index_methods
)Returns a mutable pointer to the output at this location, without
performing any bounds checking. Read more
sourceยงimpl SliceIndex<str> for Range<usize>
impl SliceIndex<str> for Range<usize>
sourceยงfn get(self, slice: &str) -> Option<&<Range<usize> as SliceIndex<str>>::Output>
fn get(self, slice: &str) -> Option<&<Range<usize> as SliceIndex<str>>::Output>
๐ฌThis is a nightly-only experimental API. (
slice_index_methods
)Returns a shared reference to the output at this location, if in
bounds.
sourceยงfn get_mut(
self,
slice: &mut str,
) -> Option<&mut <Range<usize> as SliceIndex<str>>::Output>
fn get_mut( self, slice: &mut str, ) -> Option<&mut <Range<usize> as SliceIndex<str>>::Output>
๐ฌThis is a nightly-only experimental API. (
slice_index_methods
)Returns a mutable reference to the output at this location, if in
bounds.
sourceยงunsafe fn get_unchecked(
self,
slice: *const str,
) -> *const <Range<usize> as SliceIndex<str>>::Output
unsafe fn get_unchecked( self, slice: *const str, ) -> *const <Range<usize> as SliceIndex<str>>::Output
๐ฌThis is a nightly-only experimental API. (
slice_index_methods
)Returns a pointer to the output at this location, without
performing any bounds checking. Read more
sourceยงunsafe fn get_unchecked_mut(
self,
slice: *mut str,
) -> *mut <Range<usize> as SliceIndex<str>>::Output
unsafe fn get_unchecked_mut( self, slice: *mut str, ) -> *mut <Range<usize> as SliceIndex<str>>::Output
๐ฌThis is a nightly-only experimental API. (
slice_index_methods
)Returns a mutable pointer to the output at this location, without
performing any bounds checking. Read more
impl<Idx> Copy for Range<Idx>where
Idx: Copy,
impl<Idx> Eq for Range<Idx>where
Idx: Eq,
impl<Idx> StructuralPartialEq for Range<Idx>
Auto Trait Implementationsยง
impl<Idx> Freeze for Range<Idx>where
Idx: Freeze,
impl<Idx> RefUnwindSafe for Range<Idx>where
Idx: RefUnwindSafe,
impl<Idx> Send for Range<Idx>where
Idx: Send,
impl<Idx> Sync for Range<Idx>where
Idx: Sync,
impl<Idx> Unpin for Range<Idx>where
Idx: Unpin,
impl<Idx> UnwindSafe for Range<Idx>where
Idx: UnwindSafe,
Blanket Implementationsยง
sourceยงimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
sourceยงfn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceยงimpl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
sourceยงunsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
๐ฌThis is a nightly-only experimental API. (
clone_to_uninit
)ยงimpl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
ยงfn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Checks if this value is equivalent to the given key. Read more
ยงimpl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
ยงfn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.