pub struct RangeFull;
new_range_api
)Expand description
An unbounded range (..
).
RangeFull
is primarily used as a slicing index, its shorthand is ..
.
It cannot serve as an Iterator
because it doesnโt have a starting point.
ยงExamples
The ..
syntax is a RangeFull
:
assert_eq!(.., std::ops::RangeFull);
It does not have an IntoIterator
implementation, so you canโt use it in
a for
loop directly. This wonโt 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 Implementationsยง
Sourceยงimpl Arbitrary for RangeFull
impl Arbitrary for RangeFull
Sourceยงtype Parameters = ()
type Parameters = ()
arbitrary_with
accepts for configuration
of the generated Strategy
. Parameters must implement Default
.Sourceยงfn arbitrary_with(
_args: <RangeFull as Arbitrary>::Parameters,
) -> <RangeFull as Arbitrary>::Strategy
fn arbitrary_with( _args: <RangeFull as Arbitrary>::Parameters, ) -> <RangeFull as Arbitrary>::Strategy
Sourceยงimpl<C1> ContainsToken<C1> for RangeFullwhere
C1: AsChar,
impl<C1> ContainsToken<C1> for RangeFullwhere
C1: AsChar,
Sourceยงfn contains_token(&self, _token: C1) -> bool
fn contains_token(&self, _token: C1) -> bool
Sourceยงimpl From<RangeFull> for ValueParser
impl From<RangeFull> for ValueParser
Create an i64
ValueParser
from a ..
range
See RangedI64ValueParser
for more control over the output type.
See also RangedU64ValueParser
ยงExamples
let mut cmd = clap::Command::new("raw")
.arg(
clap::Arg::new("port")
.long("port")
.value_parser(..)
.action(clap::ArgAction::Set)
.required(true)
);
let m = cmd.try_get_matches_from_mut(["cmd", "--port", "3001"]).unwrap();
let port: i64 = *m.get_one("port")
.expect("required");
assert_eq!(port, 3001);
Sourceยงfn from(value: RangeFull) -> ValueParser
fn from(value: RangeFull) -> ValueParser
Sourceยงimpl From<RangeFull> for ValueRange
impl From<RangeFull> for ValueRange
Sourceยงfn from(_: RangeFull) -> ValueRange
fn from(_: RangeFull) -> ValueRange
Sourceยงimpl Index<RangeFull> for UninitSlice
impl Index<RangeFull> for UninitSlice
Sourceยงtype Output = UninitSlice
type Output = UninitSlice
Sourceยงimpl IndexMut<RangeFull> for UninitSlice
impl IndexMut<RangeFull> for UninitSlice
Sourceยงimpl<I> IteratorIndex<I> for RangeFullwhere
I: Iterator,
impl<I> IteratorIndex<I> for RangeFullwhere
I: Iterator,
Sourceยงimpl<I> IteratorIndex<I> for RangeFullwhere
I: Iterator,
impl<I> IteratorIndex<I> for RangeFullwhere
I: Iterator,
Sourceยงimpl NomRange<usize> for RangeFull
impl NomRange<usize> for RangeFull
Sourceยงtype Saturating = SaturatingIterator
type Saturating = SaturatingIterator
Sourceยงfn is_inverted(&self) -> bool
fn is_inverted(&self) -> bool
true
if the range is inverted.Sourceยงfn saturating_iter(&self) -> <RangeFull as NomRange<usize>>::Saturating
fn saturating_iter(&self) -> <RangeFull as NomRange<usize>>::Saturating
Sourceยงfn bounded_iter(&self) -> <RangeFull as NomRange<usize>>::Bounded
fn bounded_iter(&self) -> <RangeFull as NomRange<usize>>::Bounded
None
for all further elements.1.28.0 ยท Sourceยงimpl<T> RangeBounds<T> for RangeFullwhere
T: ?Sized,
impl<T> RangeBounds<T> for RangeFullwhere
T: ?Sized,
1.15.0 ยท Sourceยงimpl<T> SliceIndex<[T]> for RangeFull
impl<T> SliceIndex<[T]> for RangeFull
Sourceยงfn get(self, slice: &[T]) -> Option<&[T]>
fn get(self, slice: &[T]) -> Option<&[T]>
slice_index_methods
)Sourceยงfn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>
fn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>
slice_index_methods
)Sourceยงunsafe fn get_unchecked(self, slice: *const [T]) -> *const [T]
unsafe fn get_unchecked(self, slice: *const [T]) -> *const [T]
slice_index_methods
)Sourceยงunsafe 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 ยท Sourceยงimpl 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]
.
Sourceยงfn get(self, slice: &str) -> Option<&<RangeFull as SliceIndex<str>>::Output>
fn get(self, slice: &str) -> Option<&<RangeFull as SliceIndex<str>>::Output>
slice_index_methods
)Sourceยงfn 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
)Sourceยงunsafe 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
)Sourceยงunsafe 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
)Sourceยงimpl<'data> TryFrom<&RangeFull> for CodePointInversionList<'data>
impl<'data> TryFrom<&RangeFull> for CodePointInversionList<'data>
Sourceยงtype Error = CodePointInversionListError
type Error = CodePointInversionListError
Sourceยงfn try_from(
_: &RangeFull,
) -> Result<CodePointInversionList<'data>, <CodePointInversionList<'data> as TryFrom<&RangeFull>>::Error>
fn try_from( _: &RangeFull, ) -> Result<CodePointInversionList<'data>, <CodePointInversionList<'data> as TryFrom<&RangeFull>>::Error>
impl Copy for RangeFull
impl Eq for RangeFull
impl StructuralPartialEq for RangeFull
Auto Trait Implementationsยง
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 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
Sourceยงimpl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Sourceยงimpl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Sourceยงimpl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Sourceยงfn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.Sourceยงimpl<T> Instrument for T
impl<T> Instrument for T
Sourceยงfn instrument(self, span: Span) -> Instrumented<Self> โ
fn instrument(self, span: Span) -> Instrumented<Self> โ
Sourceยงfn in_current_span(self) -> Instrumented<Self> โ
fn in_current_span(self) -> Instrumented<Self> โ
Sourceยงimpl<T> IntoEither for T
impl<T> IntoEither for T
Sourceยงfn into_either(self, into_left: bool) -> Either<Self, Self> โ
fn into_either(self, into_left: bool) -> Either<Self, Self> โ
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSourceยงfn into_either_with<F>(self, into_left: F) -> Either<Self, Self> โ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> โ
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more