1 The `join()` function constructs a string out of the given array by 2 converting each array item into a string and then joining these substrings 3 putting the given separator value in between. An empty array will result in 4 an empty string. 5 6 The separator argument is converted into a string in case it is not already 7 a string value. 8 9 Returns `null` if the given array argument is not an array value. 10 11 -- Testcase -- 12 {% 13 printf("%.J\n", [ 14 join("|", []), 15 join("|", [ 1, 2, 3 ]), 16 join("|", [ null, false, "" ]), 17 join(123, [ "a", "b", "c" ]), 18 join(123, { "not": "an", "array": "value" }) 19 ]); 20 %} 21 -- End -- 22 23 -- Expect stdout -- 24 [ 25 "", 26 "1|2|3", 27 "null|false|", 28 "a123b123c", 29 null 30 ] 31 -- End --
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