ref: 2183f9eaeca9fb5d57b637c15707e663caf33575
dir: /appl/demo/lego/timers.m/
Timers : module{
Timer : adt {
id : int;
tick : chan of int;
reset : fn (t : self ref Timer);
cancel : fn (t : self ref Timer);
destroy : fn (t : self ref Timer);
};
init : fn (res : int);
new : fn(ms, rep : int) : ref Timer;
};