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join Function

join produces a string by concatenating all of the elements of the specified list of strings with the specified separator.

join(separator, list)

Examples​

> join("-", ["foo", "bar", "baz"])
"foo-bar-baz"
> join(", ", ["foo", "bar", "baz"])
foo, bar, baz
> join(", ", ["foo"])
foo
  • split performs the opposite operation: producing a list by separating a single string using a given delimiter.