get_merged_map [function]

get_merged_map( iterable var, iterable var1, ... )

returns a map of all key-value pairs found in all iterable objects passed to the function or returns null and emits a warning on failure

get_merged_map( [1,2], map(5,6), {a="4"} ); // return {0=3,1=2,int(5)=6,a="4"}