Struct std::ops::RangeFull 1.0.0[−][src]
pub struct RangeFull;
An unbounded range (..
).
RangeFull
is primarily used as a slicing index, its shorthand is ..
.
It cannot serve as an Iterator
because it doesn’t have a starting point.
Examples
The ..
syntax is a RangeFull
:
assert_eq!((..), std::ops::RangeFull);Run
It does not have an IntoIterator
implementation, so you can’t use it in
a for
loop directly. This won’t compile:
for i in .. { // ... }Run
Used as a slicing index, RangeFull
produces the full array as a slice.
let arr = [0, 1, 2, 3, 4]; assert_eq!(arr[ .. ], [0, 1, 2, 3, 4]); // This is the `RangeFull` assert_eq!(arr[ .. 3], [0, 1, 2 ]); assert_eq!(arr[ ..=3], [0, 1, 2, 3 ]); assert_eq!(arr[1.. ], [ 1, 2, 3, 4]); assert_eq!(arr[1.. 3], [ 1, 2 ]); assert_eq!(arr[1..=3], [ 1, 2, 3 ]);Run
Trait Implementations
impl<T> RangeBounds<T> for RangeFull where
T: ?Sized,
1.28.0[src]
impl<T> RangeBounds<T> for RangeFull where
T: ?Sized,
1.28.0[src]pub fn start_bound(&self) -> Bound<&T>
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pub fn end_bound(&self) -> Bound<&T>
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pub fn contains<U>(&self, item: &U) -> bool where
T: PartialOrd<U>,
U: PartialOrd<T> + ?Sized,
1.35.0[src]
T: PartialOrd<U>,
U: PartialOrd<T> + ?Sized,
impl<T> SliceIndex<[T]> for RangeFull
1.15.0[src]
impl<T> SliceIndex<[T]> for RangeFull
1.15.0[src]type Output = [T]
The output type returned by methods.
pub fn get(self, slice: &[T]) -> Option<&[T]>
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pub fn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>
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pub unsafe fn get_unchecked(self, slice: *const [T]) -> *const [T]
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pub unsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut [T]
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pub fn index(self, slice: &[T]) -> &[T]ⓘ
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pub fn index_mut(self, slice: &mut [T]) -> &mut [T]ⓘ
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impl SliceIndex<str> for RangeFull
1.20.0[src]
impl SliceIndex<str> for RangeFull
1.20.0[src]Implements substring slicing with syntax &self[..]
or &mut self[..]
.
Returns a slice of the whole string, i.e., returns &self
or &mut self
. Equivalent to &self[0 .. len]
or &mut self[0 .. len]
. Unlike
other indexing operations, this can never panic.
This operation is O(1).
Prior to 1.20.0, these indexing operations were still supported by
direct implementation of Index
and IndexMut
.
Equivalent to &self[0 .. len]
or &mut self[0 .. len]
.
type Output = str
The output type returned by methods.
pub fn get(self, slice: &str) -> Option<&<RangeFull as SliceIndex<str>>::Output>
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pub fn get_mut(
self,
slice: &mut str
) -> Option<&mut <RangeFull as SliceIndex<str>>::Output>
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self,
slice: &mut str
) -> Option<&mut <RangeFull as SliceIndex<str>>::Output>
pub unsafe fn get_unchecked(
self,
slice: *const str
) -> *const <RangeFull as SliceIndex<str>>::Output
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self,
slice: *const str
) -> *const <RangeFull as SliceIndex<str>>::Output
pub unsafe fn get_unchecked_mut(
self,
slice: *mut str
) -> *mut <RangeFull as SliceIndex<str>>::Output
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self,
slice: *mut str
) -> *mut <RangeFull as SliceIndex<str>>::Output
pub fn index(self, slice: &str) -> &<RangeFull as SliceIndex<str>>::Output
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pub fn index_mut(
self,
slice: &mut str
) -> &mut <RangeFull as SliceIndex<str>>::Output
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self,
slice: &mut str
) -> &mut <RangeFull as SliceIndex<str>>::Output
impl Copy for RangeFull
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impl Eq for RangeFull
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impl StructuralEq for RangeFull
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impl StructuralPartialEq for RangeFull
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Auto Trait Implementations
impl RefUnwindSafe for RangeFull
impl Send for RangeFull
impl Sync for RangeFull
impl Unpin for RangeFull
impl UnwindSafe for RangeFull
Blanket Implementations
impl<T> Borrow<T> for T where
T: ?Sized,
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impl<T> Borrow<T> for T where
T: ?Sized,
[src]pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
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Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
impl<T> BorrowMut<T> for T where
T: ?Sized,
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impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
[src]
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W