map<K, V>

var length int32

var x map<string, int32> = {};
var len = x.length;

var keys list\<K\>

var x map<string, int32> = {};
x.put('apple', 1);
x.put('google', 2);
for(var k in x.keys) {
  var value = x[k];
  @console.log(k + " is " + string(value));
}

func put(key K, value V) void

var x map<string, int32> = {};
x.put('apple', 1);
x.put('google', 2);

func get(key K) V

var x map<string, int32> = {};
x.put('apple', 1);
x.put('google', 2);
var n = x.get('apple');
@assert(n == 1, '');

func has(key K) bool

var x map<string, int32> = {};
x.put('apple', 1);
x.put('google', 2);
@assert(x.has('apple') == true, '');

func remove(key K) void

var x map<string, int32> = {};
x.put('apple', 1);
x.put('google', 2);
x.remove('apple');
@assert(x.length == 1, '');

func clear() void

var x map<string, int32> = {};
x.put('apple', 1);
x.put('google', 2);
x.clear();
@assert(x.length == 0, '');