Struct std::ops::RangeFull

pub struct RangeFull;

An unbounded range. Use .. (two dots) for its shorthand.

Its primary use case is slicing index. 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];
assert_eq!(arr[ .. ], [0,1,2,3]);  // RangeFull
assert_eq!(arr[ ..3], [0,1,2  ]);
assert_eq!(arr[1.. ], [  1,2,3]);
assert_eq!(arr[1..3], [  1,2  ]);

Trait Implementations

impl<T> RangeArgument<T> for RangeFull where T: ?Sized [src]

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

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

impl PartialEq<RangeFull> for RangeFull [src]

fn eq(&self, __arg_0: &RangeFull) -> bool

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

impl Clone for RangeFull [src]

fn clone(&self) -> RangeFull

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

impl Eq for RangeFull [src]

impl Debug for RangeFull [src]

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

impl Copy for RangeFull [src]

impl<T> SliceIndex<T> for RangeFull

1.13.0

[src]

type Output = [T]

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

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

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

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

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

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

impl Hash for RangeFull [src]

fn hash<__H>(&self, __arg_0: &mut __H) where __H: Hasher

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

1.3.0