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
sourceimpl Archive for RangeFull
impl Archive for RangeFull
sourceimpl Index<RangeFull> for ArchivedString
impl Index<RangeFull> for ArchivedString
sourceimpl Index<RangeFull> for ArchivedCString
impl Index<RangeFull> for ArchivedCString
1.28.0 · sourceimpl<T> RangeBounds<T> for RangeFull where
T: ?Sized,
impl<T> RangeBounds<T> for RangeFull where
T: ?Sized,
sourcepub fn start_bound(&self) -> Bound<&T>
pub fn start_bound(&self) -> Bound<&T>
Start index bound. Read more
1.35.0 · sourcefn contains<U>(&self, item: &U) -> bool where
T: PartialOrd<U>,
U: PartialOrd<T> + ?Sized,
fn contains<U>(&self, item: &U) -> bool where
T: PartialOrd<U>,
U: PartialOrd<T> + ?Sized,
Returns true
if item
is contained in the range. Read more
1.15.0 · sourceimpl<T> SliceIndex<[T]> for RangeFull
impl<T> SliceIndex<[T]> for RangeFull
sourcepub fn get(self, slice: &[T]) -> Option<&[T]>
pub fn get(self, slice: &[T]) -> Option<&[T]>
slice_index_methods
)Returns a shared reference to the output at this location, if in bounds. Read more
sourcepub fn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>
pub fn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>
slice_index_methods
)Returns a mutable reference to the output at this location, if in bounds. Read more
sourcepub unsafe fn get_unchecked(self, slice: *const [T]) -> *const [T]
pub unsafe fn get_unchecked(self, slice: *const [T]) -> *const [T]
slice_index_methods
)Returns a shared reference to the output at this location, without
performing any bounds checking.
Calling this method with an out-of-bounds index or a dangling slice
pointer
is undefined behavior even if the resulting reference is not used. Read more
sourcepub unsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut [T]
pub unsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut [T]
slice_index_methods
)Returns a mutable reference to the output at this location, without
performing any bounds checking.
Calling this method with an out-of-bounds index or a dangling slice
pointer
is undefined behavior even if the resulting reference is not used. Read more
1.20.0 · sourceimpl 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]
.
sourcepub fn get(self, slice: &str) -> Option<&<RangeFull as SliceIndex<str>>::Output>
pub fn get(self, slice: &str) -> Option<&<RangeFull as SliceIndex<str>>::Output>
slice_index_methods
)Returns a shared reference to the output at this location, if in bounds. Read more
sourcepub fn get_mut(
self,
slice: &mut str
) -> Option<&mut <RangeFull as SliceIndex<str>>::Output>
pub fn get_mut(
self,
slice: &mut str
) -> Option<&mut <RangeFull as SliceIndex<str>>::Output>
slice_index_methods
)Returns a mutable reference to the output at this location, if in bounds. Read more
sourcepub unsafe fn get_unchecked(
self,
slice: *const str
) -> *const <RangeFull as SliceIndex<str>>::Output
pub unsafe fn get_unchecked(
self,
slice: *const str
) -> *const <RangeFull as SliceIndex<str>>::Output
slice_index_methods
)Returns a shared reference to the output at this location, without
performing any bounds checking.
Calling this method with an out-of-bounds index or a dangling slice
pointer
is undefined behavior even if the resulting reference is not used. Read more
sourcepub unsafe fn get_unchecked_mut(
self,
slice: *mut str
) -> *mut <RangeFull as SliceIndex<str>>::Output
pub unsafe fn get_unchecked_mut(
self,
slice: *mut str
) -> *mut <RangeFull as SliceIndex<str>>::Output
slice_index_methods
)Returns a mutable reference to the output at this location, without
performing any bounds checking.
Calling this method with an out-of-bounds index or a dangling slice
pointer
is undefined behavior even if the resulting reference is not used. Read more
impl Copy for RangeFull
impl Eq for RangeFull
impl StructuralEq for RangeFull
impl StructuralPartialEq for RangeFull
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
sourceimpl<T> ArchivePointee for T
impl<T> ArchivePointee for T
type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
sourcepub fn pointer_metadata(
&<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
pub fn pointer_metadata(
&<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
sourceimpl<T> ArchiveUnsized for T where
T: Archive,
impl<T> ArchiveUnsized for T where
T: Archive,
type Archived = <T as Archive>::Archived
type Archived = <T as Archive>::Archived
The archived counterpart of this type. Unlike Archive
, it may be unsized. Read more
type MetadataResolver = ()
type MetadataResolver = ()
The resolver for the metadata of this type. Read more
sourcepub unsafe fn resolve_metadata(
&self,
usize,
<T as ArchiveUnsized>::MetadataResolver,
*mut <<T as ArchiveUnsized>::Archived as ArchivePointee>::ArchivedMetadata
)
pub unsafe fn resolve_metadata(
&self,
usize,
<T as ArchiveUnsized>::MetadataResolver,
*mut <<T as ArchiveUnsized>::Archived as ArchivePointee>::ArchivedMetadata
)
Creates the archived version of the metadata for this value at the given position and writes it to the given output. Read more
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<F, W, T, D> Deserialize<With<T, W>, D> for F where
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
impl<F, W, T, D> Deserialize<With<T, W>, D> for F where
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
sourceimpl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
sourcepub fn equivalent(&self, key: &K) -> bool
pub fn equivalent(&self, key: &K) -> bool
Compare self to key
and return true
if they are equal.
sourceimpl<T, S> SerializeUnsized<S> for T where
T: Serialize<S>,
S: Serializer + ?Sized,
impl<T, S> SerializeUnsized<S> for T where
T: Serialize<S>,
S: Serializer + ?Sized,
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more