Example of Events.d, the first Event Model for D programming language

events_example.d

// 
// http://blog.heapsource.com/post/71111508527/events-d
//

import std.stdio;
import std.string;
import events;

void main() {
    auto event = new EventList!(string, int);
    auto trigger = event.own;

    event ^ (age) {
        return "first age is %d".format(age);
    };

    event ^ (age) {
        return "second age is %d".format(age);
    };
    event.add((age) {
        return "third age is %d".format(age);
    });
    auto text = trigger(30);
    text.writeln;
}