### Atom - `j`

- Join

Characters: `j`

Tags: `array`

##### Arity: dyadic

This atom is dyadic, which means it takes two arguments.

##### Functionality

Join the list `x`

with some separator `y`

.

##### Details

Each sublist of `x`

is concatenated with `y`

in between. Essentially, this functions as `x[1] ; y ; x[2] ; y ; x[3] ; ... ; x[-1] ; y ; x[0]`

.