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

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

    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);Run

It does not have an `IntoIterator` implementation, so you can't use it in a `for` loop directly. This won't compile:

ⓘThis example deliberately fails to 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 Copy for RangeFull`
[src]

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

#### `fn clone(&self) -> RangeFull`
[src]

Returns a copy of the value. Read more

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

Performs copy-assignment from `source`. Read more

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

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

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

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

This method tests for `!=`.

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

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

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

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

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

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

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

#### `fn fmt(&self, fmt: &mut Formatter) -> Result`
[src]

Formats the value using the given formatter. 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]>`
[src]

🔬 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]>`
[src]

🔬 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]`
[src]

🔬 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]`
[src]

🔬 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]`
[src]

🔬 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]`
[src]

🔬 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 Index<RangeFull> for str`
[src]

Implements substring slicing with syntax `&self[..]`.

Returns a slice of the whole string. This operation can never panic.

Equivalent to `&self[0 .. len]`.

#### `type Output = str`

The returned type after indexing.

#### `fn index(&self, _index: RangeFull) -> &str`
[src]

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

### `impl IndexMut<RangeFull> for str`
1.3.0
[src]

Implements mutable substring slicing with syntax `&mut self[..]`.

Returns a mutable slice of the whole string. This operation can never panic.

Equivalent to `&mut self[0 .. len]`.

#### `fn index_mut(&mut self, _index: RangeFull) -> &mut str`
[src]

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

### `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<&Self::Output>`
[src]

🔬 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 Self::Output>`
[src]

🔬 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) -> &Self::Output`
[src]

🔬 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 Self::Output`
[src]

🔬 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) -> &Self::Output`
[src]

🔬 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 Self::Output`
[src]

🔬 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

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