1.0.0[][src]Struct std::ops::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);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<T> RangeBounds<T> for RangeFull where
    T: ?Sized
1.28.0
[src]

fn contains<U>(&self, item: &U) -> bool where
    T: PartialOrd<U>,
    U: PartialOrd<T> + ?Sized
[src]

🔬 This is a nightly-only experimental API. (range_contains #32311)

recently added as per RFC

Returns true if item is contained in the range. Read more

impl Debug for RangeFull[src]

impl Hash for RangeFull[src]

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

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

impl Clone for RangeFull[src]

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

Performs copy-assignment from source. Read more

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].

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.

impl Eq for RangeFull[src]

impl PartialEq<RangeFull> for RangeFull[src]

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

This method tests for !=.

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

type Output = [T]

The output type returned by methods.

impl SliceIndex<str> for RangeFull
1.20.0
[src]

type Output = str

The output type returned by methods.

impl Copy for RangeFull[src]

impl Index<RangeFull> for String[src]

type Output = str

The returned type after indexing.

impl IndexMut<RangeFull> for String
1.3.0
[src]

impl Index<RangeFull> for CString
1.7.0
[src]

type Output = CStr

The returned type after indexing.

impl Index<RangeFull> for OsString[src]

type Output = OsStr

The returned type after indexing.

Auto Trait Implementations

impl Send for RangeFull

impl Sync for RangeFull

Blanket Implementations

impl<T, U> TryFrom for T where
    T: From<U>, 
[src]

type Error = !

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

impl<T> From for T[src]

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

impl<T, U> Into for T where
    U: From<T>, 
[src]

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

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

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T