pub struct RangeFull;
Expand description
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);
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 .. {
// ...
}
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 ]);
Trait Implementations§
source§impl<'a, T, O> BitSliceIndex<'a, T, O> for RangeFull
impl<'a, T, O> BitSliceIndex<'a, T, O> for RangeFull
source§fn get(
self,
bits: <RangeFull as BitSliceIndex<'a, T, O>>::Immut,
) -> Option<<RangeFull as BitSliceIndex<'a, T, O>>::Immut>
fn get( self, bits: <RangeFull as BitSliceIndex<'a, T, O>>::Immut, ) -> Option<<RangeFull as BitSliceIndex<'a, T, O>>::Immut>
source§fn get_mut(
self,
bits: <RangeFull as BitSliceIndex<'a, T, O>>::Mut,
) -> Option<<RangeFull as BitSliceIndex<'a, T, O>>::Mut>
fn get_mut( self, bits: <RangeFull as BitSliceIndex<'a, T, O>>::Mut, ) -> Option<<RangeFull as BitSliceIndex<'a, T, O>>::Mut>
source§unsafe fn get_unchecked(
self,
bits: <RangeFull as BitSliceIndex<'a, T, O>>::Immut,
) -> <RangeFull as BitSliceIndex<'a, T, O>>::Immut
unsafe fn get_unchecked( self, bits: <RangeFull as BitSliceIndex<'a, T, O>>::Immut, ) -> <RangeFull as BitSliceIndex<'a, T, O>>::Immut
source§unsafe fn get_unchecked_mut(
self,
bits: <RangeFull as BitSliceIndex<'a, T, O>>::Mut,
) -> <RangeFull as BitSliceIndex<'a, T, O>>::Mut
unsafe fn get_unchecked_mut( self, bits: <RangeFull as BitSliceIndex<'a, T, O>>::Mut, ) -> <RangeFull as BitSliceIndex<'a, T, O>>::Mut
source§fn index(
self,
bits: <RangeFull as BitSliceIndex<'a, T, O>>::Immut,
) -> <RangeFull as BitSliceIndex<'a, T, O>>::Immut
fn index( self, bits: <RangeFull as BitSliceIndex<'a, T, O>>::Immut, ) -> <RangeFull as BitSliceIndex<'a, T, O>>::Immut
self
is out of
bounds. Read moresource§fn index_mut(
self,
bits: <RangeFull as BitSliceIndex<'a, T, O>>::Mut,
) -> <RangeFull as BitSliceIndex<'a, T, O>>::Mut
fn index_mut( self, bits: <RangeFull as BitSliceIndex<'a, T, O>>::Mut, ) -> <RangeFull as BitSliceIndex<'a, T, O>>::Mut
self
is out of bounds. Read more1.28.0 · source§impl<T> RangeBounds<T> for RangeFullwhere
T: ?Sized,
impl<T> RangeBounds<T> for RangeFullwhere
T: ?Sized,
1.15.0 (const: unstable) · source§impl<T> SliceIndex<[T]> for RangeFull
impl<T> SliceIndex<[T]> for RangeFull
source§fn get(self, slice: &[T]) -> Option<&[T]>
fn get(self, slice: &[T]) -> Option<&[T]>
slice_index_methods
)source§fn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>
fn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>
slice_index_methods
)source§unsafe fn get_unchecked(self, slice: *const [T]) -> *const [T]
unsafe fn get_unchecked(self, slice: *const [T]) -> *const [T]
slice_index_methods
)source§unsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut [T]
unsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut [T]
slice_index_methods
)1.20.0 (const: unstable) · source§impl SliceIndex<str> for RangeFull
impl SliceIndex<str> for RangeFull
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]
.
source§fn get(self, slice: &str) -> Option<&<RangeFull as SliceIndex<str>>::Output>
fn get(self, slice: &str) -> Option<&<RangeFull as SliceIndex<str>>::Output>
slice_index_methods
)source§fn get_mut(
self,
slice: &mut str,
) -> Option<&mut <RangeFull as SliceIndex<str>>::Output>
fn get_mut( self, slice: &mut str, ) -> Option<&mut <RangeFull as SliceIndex<str>>::Output>
slice_index_methods
)source§unsafe fn get_unchecked(
self,
slice: *const str,
) -> *const <RangeFull as SliceIndex<str>>::Output
unsafe fn get_unchecked( self, slice: *const str, ) -> *const <RangeFull as SliceIndex<str>>::Output
slice_index_methods
)source§unsafe fn get_unchecked_mut(
self,
slice: *mut str,
) -> *mut <RangeFull as SliceIndex<str>>::Output
unsafe fn get_unchecked_mut( self, slice: *mut str, ) -> *mut <RangeFull as SliceIndex<str>>::Output
slice_index_methods
)impl Copy for RangeFull
impl Eq for RangeFull
impl StructuralPartialEq for RangeFull
Auto Trait Implementations§
impl Freeze for RangeFull
impl RefUnwindSafe for RangeFull
impl Send for RangeFull
impl Sync for RangeFull
impl Unpin for RangeFull
impl UnwindSafe for RangeFull
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)source§impl<T> CloneToUninit for Twhere
T: Copy,
impl<T> CloneToUninit for Twhere
T: Copy,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
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impl<Q, K> Equivalent<K> for Q
source§impl<T> FmtForward for T
impl<T> FmtForward for T
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Self: Binary,
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Self: Binary,
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Self: Display,
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Self: Display,
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Self: LowerExp,
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Self: LowerExp,
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Debug
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Self: LowerHex,
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Self: LowerHex,
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Self: UpperExp,
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Self: UpperExp,
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to use its UpperExp
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Debug
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Self: UpperHex,
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Self: UpperHex,
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Debug
-formatted.source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
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otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
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otherwise. Read moresource§impl<T> Pipe for Twhere
T: ?Sized,
impl<T> Pipe for Twhere
T: ?Sized,
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Self: Sized,
fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> Rwhere
Self: Sized,
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R: 'a,
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R: 'a,
self
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R: 'a,
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&'a mut self,
func: impl FnOnce(&'a mut B) -> R,
) -> R
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R: RangeBounds<usize>,
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source§fn normalize(
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start: impl Into<Option<usize>>,
end: impl Into<Option<usize>>,
) -> Range<usize> ⓘ
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Range
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