map [function]

map( [key, value, ...] )

returns a 'map' (map/hash table) object, containing the even arguments mapped to respective previous arguments

• if no arguments are passed, an empty map is returned
• if an even number of arguments is passed, function returns null and emits a warning

map( "John", "name", 1234567890, "phone" ); // useful for mapping additional data to variables or making sets