# Trait alloc::slice::Join

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    pub trait Join<Separator> {
        type Output;

        // Required method
        fn join(slice: &Self, sep: Separator) -> Self::Output;
    }

🔬This is a nightly-only experimental API. (`slice_concat_trait` #27747)
Expand description

Helper trait for `[T]::join`

## Required Associated Types§

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#### type Output

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

The resulting type after concatenation

## Required Methods§

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#### fn join(slice: &Self, sep: Separator) -> Self::Output

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

Implementation of `[T]::join`

## Object Safety§

This trait is not object safe.

## Implementors§

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### impl<S: Borrow<str>> Join<&str> for [S]

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#### type Output = String

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### impl<T: Clone, V: Borrow<[T]>> Join<&[T]> for [V]

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#### type Output = Vec<T>

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### impl<T: Clone, V: Borrow<[T]>> Join<&T> for [V]

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#### type Output = Vec<T>