# join

`import { join } from "destack:bytes";`

Join byte sequences with `separator`.

```ds title="join"
export function join(values: Iterator<Bytes, void>, separator: &'a readonly [uint8]): readonly [uint8]
```

[language/library/src/bytes/bytes.ds:219:221](https://github.com/destack-sh/destack/blob/main/language/library/src/bytes/bytes.ds#L219-L221)