Struct RangeFull 

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);

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

impl Clone for RangeFull

fn clone(&self) -> RangeFull

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RangeFull

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for RangeFull

fn default() -> RangeFull

Returns the “default value” for a type.

impl Distribution<bool> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> bool

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<i128> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> i128

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<i16> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> i16

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<i32> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> i32

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<i64> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> i64

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<i8> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> i8

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<isize> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> isize

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<u128> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> u128

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<u16> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> u16

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<u32> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> u32

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<u64> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> u64

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<u8> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> u8

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Distribution<usize> for RangeFull

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> usize

🔬This is a nightly-only experimental API. (random)

Samples a random value from the distribution, using the specified random source.

impl Hash for RangeFull

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Index<RangeFull> for ByteString

type Output = ByteStr

The returned type after indexing.

fn index(&self, _: RangeFull) -> &ByteStr

Performs the indexing (container[index]) operation.

impl Index<RangeFull> for CString

type Output = CStr

The returned type after indexing.

fn index(&self, _index: RangeFull) -> &CStr

Performs the indexing (container[index]) operation.

impl<K, V, S> Index<RangeFull> for IndexMap<K, V, S>

type Output = Slice<K, V>

The returned type after indexing.

fn index( &self, range: RangeFull, ) -> &<IndexMap<K, V, S> as Index<RangeFull>>::Output

Performs the indexing (container[index]) operation.

impl<T, S> Index<RangeFull> for IndexSet<T, S>

type Output = Slice<T>

The returned type after indexing.

fn index( &self, range: RangeFull, ) -> &<IndexSet<T, S> as Index<RangeFull>>::Output

Performs the indexing (container[index]) operation.

impl Index<RangeFull> for OsString

type Output = OsStr

The returned type after indexing.

fn index(&self, _index: RangeFull) -> &OsStr

Performs the indexing (container[index]) operation.

impl<K, V> Index<RangeFull> for Slice<K, V>

type Output = Slice<K, V>

The returned type after indexing.

fn index(&self, range: RangeFull) -> &Slice<K, V>

Performs the indexing (container[index]) operation.

impl<T> Index<RangeFull> for Slice<T>

type Output = Slice<T>

The returned type after indexing.

fn index(&self, range: RangeFull) -> &<Slice<T> as Index<RangeFull>>::Output

Performs the indexing (container[index]) operation.

impl IndexMut<RangeFull> for ByteString

fn index_mut(&mut self, _: RangeFull) -> &mut ByteStr

Performs the mutable indexing (container[index]) operation.

impl<K, V, S> IndexMut<RangeFull> for IndexMap<K, V, S>

fn index_mut( &mut self, range: RangeFull, ) -> &mut <IndexMap<K, V, S> as Index<RangeFull>>::Output

Performs the mutable indexing (container[index]) operation.

impl IndexMut<RangeFull> for OsString

fn index_mut(&mut self, _index: RangeFull) -> &mut OsStr

Performs the mutable indexing (container[index]) operation.

impl<K, V> IndexMut<RangeFull> for Slice<K, V>

fn index_mut(&mut self, range: RangeFull) -> &mut Slice<K, V>

Performs the mutable indexing (container[index]) operation.

impl<T> IntoBounds<T> for RangeFull

fn into_bounds(self) -> (Bound<T>, Bound<T>)

🔬This is a nightly-only experimental API. (range_into_bounds)

Convert this range into the start and end bounds. Returns (start_bound, end_bound).

fn intersect<R>(self, other: R) -> (Bound<T>, Bound<T>)

where Self: Sized, T: Ord, R: IntoBounds<T>,

🔬This is a nightly-only experimental API. (range_into_bounds)

Compute the intersection of self and other.

impl PartialEq for RangeFull

fn eq(&self, other: &RangeFull) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> RangeBounds<T> for RangeFull

where T: ?Sized,

fn start_bound(&self) -> Bound<&T>

Start index bound.

fn end_bound(&self) -> Bound<&T>

End index bound.

fn contains<U>(&self, item: &U) -> bool

where T: PartialOrd<U>, U: PartialOrd<T> + ?Sized,

Returns true if item is contained in the range.

fn is_empty(&self) -> bool

where T: PartialOrd,

🔬This is a nightly-only experimental API. (range_bounds_is_empty)

Returns true if the range contains no items. One-sided ranges (RangeFrom, etc) always return false.

impl<T> SliceIndex<[T]> for RangeFull

type Output = [T]

The output type returned by methods.

fn get(self, slice: &[T]) -> Option<&[T]>

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a shared reference to the output at this location, if in bounds.

fn get_mut(self, slice: &mut [T]) -> Option<&mut [T]>

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a mutable reference to the output at this location, if in bounds.

unsafe fn get_unchecked(self, slice: *const [T]) -> *const [T]

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a pointer to the output at this location, without performing any bounds checking.

unsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut [T]

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a mutable pointer to the output at this location, without performing any bounds checking.

fn index(self, slice: &[T]) -> &[T]

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a shared reference to the output at this location, panicking if out of bounds.

fn index_mut(self, slice: &mut [T]) -> &mut [T]

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a mutable reference to the output at this location, panicking if out of bounds.

impl SliceIndex<ByteStr> for RangeFull

type Output = ByteStr

The output type returned by methods.

fn get( self, slice: &ByteStr, ) -> Option<&<RangeFull as SliceIndex<ByteStr>>::Output>

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a shared reference to the output at this location, if in bounds.

fn get_mut( self, slice: &mut ByteStr, ) -> Option<&mut <RangeFull as SliceIndex<ByteStr>>::Output>

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a mutable reference to the output at this location, if in bounds.

unsafe fn get_unchecked( self, slice: *const ByteStr, ) -> *const <RangeFull as SliceIndex<ByteStr>>::Output

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a pointer to the output at this location, without performing any bounds checking.

unsafe fn get_unchecked_mut( self, slice: *mut ByteStr, ) -> *mut <RangeFull as SliceIndex<ByteStr>>::Output

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a mutable pointer to the output at this location, without performing any bounds checking.

fn index(self, slice: &ByteStr) -> &<RangeFull as SliceIndex<ByteStr>>::Output

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a shared reference to the output at this location, panicking if out of bounds.

fn index_mut( self, slice: &mut ByteStr, ) -> &mut <RangeFull as SliceIndex<ByteStr>>::Output

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a mutable reference to the output at this location, panicking if out of bounds.

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].

type Output = str

The output type returned by methods.

fn get(self, slice: &str) -> Option<&<RangeFull as SliceIndex<str>>::Output>

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a shared reference to the output at this location, if in bounds.

fn get_mut( self, slice: &mut str, ) -> Option<&mut <RangeFull as SliceIndex<str>>::Output>

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a mutable reference to the output at this location, if in bounds.

unsafe fn get_unchecked( self, slice: *const str, ) -> *const <RangeFull as SliceIndex<str>>::Output

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a pointer to the output at this location, without performing any bounds checking.

unsafe fn get_unchecked_mut( self, slice: *mut str, ) -> *mut <RangeFull as SliceIndex<str>>::Output

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a mutable pointer to the output at this location, without performing any bounds checking.

fn index(self, slice: &str) -> &<RangeFull as SliceIndex<str>>::Output

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a shared reference to the output at this location, panicking if out of bounds.

fn index_mut( self, slice: &mut str, ) -> &mut <RangeFull as SliceIndex<str>>::Output

🔬This is a nightly-only experimental API. (slice_index_methods)

Returns a mutable reference to the output at this location, panicking if out of bounds.

impl Copy for RangeFull

impl Eq for RangeFull

impl StructuralPartialEq for RangeFull