{
  "name": "string_to_array",
  "type": "function",
  "description": "Splits string into an array using supplied delimiter and optional string for empty values.",
  "arguments": [
    {"arg":"string", "description":"the input string"},
    {"arg":"delimiter","optional":true,"default":"','","description":"the string delimiter used to split the input string"},
    {"arg":"empty_value","optional":true,"default":"''","description":"the optional string to use as replacement for empty (zero length) matches"}],
  "examples": [ { "expression":"string_to_array('1,2,3',',')", "returns":"[ '1', '2', '3' ]"},
                { "expression":"string_to_array('1,,3',',','0')", "returns":"[ '1', '0', '3' ]"}
  ]
}