std::ops::RangeFull - Rust
Description: API documentation for the Rust `RangeFull` struct in crate `std`.
Keywords: rust, rustlang, rust-lang, RangeFull

# Struct std::ops::RangeFull 1.0.0 [−] [src]

    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);Run

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 .. {
       // ...
    }Run

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  ]);Run

## Trait Implementations

### `impl Debug for RangeFull`
[src]

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

Formats the value using the given formatter.

### `impl Clone for RangeFull`
[src]

#### `fn clone(&self) -> RangeFull`

Returns a copy of the value. Read more

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

Performs copy-assignment from `source`. Read more

### `impl Eq for RangeFull`
[src]

### `impl Copy for RangeFull`
[src]

### `impl Hash for RangeFull`
[src]

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

Feeds this value into the given [`Hasher`]. Read more

#### `fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,`
1.3.0

Feeds a slice of this type into the given [`Hasher`]. Read more

### `impl SliceIndex<str> for RangeFull`
1.20.0
[src]

#### `type Output = str`

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

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_get_slice` #35729)

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

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

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

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

#### `unsafe fn get_unchecked(
self,
slice: &str
) -> &<RangeFull as SliceIndex<str>>::Output`

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

Returns a shared reference to the output at this location, without performing any bounds checking. Read more

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

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

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

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

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

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

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

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

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

### `impl<T> SliceIndex<[T]> for RangeFull`
1.15.0
[src]

#### `type Output = [T]`

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

The output type returned by methods.

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

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

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

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

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

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

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

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

Returns a shared reference to the output at this location, without performing any bounds checking. Read more

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

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

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

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

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

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

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

🔬 This is a nightly-only experimental API. (`slice_get_slice` #35729)

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

### `impl PartialEq<RangeFull> for RangeFull`
[src]

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

This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

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

This method tests for `!=`.

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

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

🔬 This is a nightly-only experimental API. (`collections_range` #30877)

waiting for dust to settle on inclusive ranges

Start index bound. Read more

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

🔬 This is a nightly-only experimental API. (`collections_range` #30877)

waiting for dust to settle on inclusive ranges

End index bound. Read more

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