Struct std::ops::RangeFull1.0.0 [] [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<T> RangeArgument<T> for RangeFull
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Unstable (collections_range #30877)

: waiting for dust to settle on inclusive ranges

Start index (inclusive) Read more

Unstable (collections_range #30877)

: waiting for dust to settle on inclusive ranges

End index (exclusive) Read more

impl Copy for RangeFull
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impl Debug for RangeFull
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Formats the value using the given formatter.

impl PartialEq<RangeFull> for RangeFull
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This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

impl<T> SliceIndex<T> for RangeFull
1.13.0
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Unstable (slice_get_slice #35729)

The output type returned by methods.

Unstable (slice_get_slice #35729)

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

Unstable (slice_get_slice #35729)

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

Unstable (slice_get_slice #35729)

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

Unstable (slice_get_slice #35729)

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

Unstable (slice_get_slice #35729)

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

Unstable (slice_get_slice #35729)

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

impl Clone for RangeFull
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Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl Hash for RangeFull
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Feeds this value into the state given, updating the hasher as necessary.

Feeds a slice of this type into the state provided.

impl Eq for RangeFull
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