The OpenTofu LanguageBuilt-in FunctionsjoinOn this pagejoin Function join produces a string by concatenating all of the elements of the specified list of strings with the specified separator. Code Blockjoin(separator, list) Examples Code Block> join("-", ["foo", "bar", "baz"])"foo-bar-baz"> join(", ", ["foo", "bar", "baz"])foo, bar, baz> join(", ", ["foo"])foo Related Functions split performs the opposite operation: producing a list by separating a single string using a given delimiter.