Trait alloc::slice::SliceConcatExt

pub trait SliceConcatExt<T: ?Sized> {
    type Output;
    fn concat(&self) -> Self::Output;
    fn join(&self, sep: &T) -> Self::Output;
    fn connect(&self, sep: &T) -> Self::Output;
}

🔬 This is a nightly-only experimental API. (slice_concat_ext #27747)

trait should not have to exist

An extension trait for concatenating slices

While this trait is unstable, the methods are stable. SliceConcatExt is included in the standard library prelude, so you can use join() and concat() as if they existed on [T] itself.

Associated Types

type Output

🔬 This is a nightly-only experimental API. (slice_concat_ext #27747)

trait should not have to exist

The resulting type after concatenation

Required Methods

fn concat(&self) -> Self::Output

Flattens a slice of T into a single value Self::Output.

Examples

assert_eq!(["hello", "world"].concat(), "helloworld");
assert_eq!([[1, 2], [3, 4]].concat(), [1, 2, 3, 4]);

fn join(&self, sep: &T) -> Self::Output

Flattens a slice of T into a single value Self::Output, placing a given separator between each.

Examples

assert_eq!(["hello", "world"].join(" "), "hello world");
assert_eq!([[1, 2], [3, 4]].join(&0), [1, 2, 0, 3, 4]);

fn connect(&self, sep: &T) -> Self::Output

Deprecated since 1.3.0

: renamed to join

Implementors

• impl<T: Clone, V: Borrow<[T]>> SliceConcatExt<T> for [V] type Output = Vec<T>;

• impl<S: Borrow<str>> SliceConcatExt<str> for [S] type Output = String;