QGIS/resources/function_help/json/array_first

{
  "name": "array_first",
  "type": "function",
  "groups": ["Arrays"],
  "description": "Returns the first value of an array.",
  "arguments": [{
    "arg": "array",
    "description": "an array"
  }],
  "examples": [{
    "expression": "array_first(array('a','b','c'))",
    "returns": "'a'"
  }],
  "tags": ["array", "first"]
}