keys - return an array of the keys from the (key, value) pairs in a mapping array keys( mapping m ); keys() returns an array of keys (indices) corresponding to the keys in the (key, value) pairs stored in the mapping m. For example, if: <pre> mapping m; m = (["hp" : 35, "sp" : 42, "mass" : 100]); </pre> then <pre> keys(m) == ({"hp", "sp", "mass"}) </pre> Note: the keys will not be returned in any apparent order. However, they will be returned in the same order as the corresponding values (returned by the values() efun). See also: values