# Maps Also known as Associative Arrays ## Usage without a declaration ```thp let mut person = Obj { name: "John", surname: "Doe", age: 33, } print("Hello {person.name}") person.age += 1 print("You just turned {person.age}") ``` ## Usage with a declaration ```thp obj Person = { String name, String surname, Int age, } let john_doe = Person { name: "John", surname: "Doe", age: 33, } ```