set<T>

var length int32

var x set<int32> = {}
x.put(1);
x.put(2);
@assert(x.length == 2, '');

func put(item T) void

var x set<int32> = {}
x.put(1);
x.put(2);

func get(index int32) T

var x set<int32> = {}
for(var i = 0; i < x.length; ++i) {
  var v = x.get(i);
  @console.log('v is ' + string(v));
}

func has(item T) bool

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