Cacher is the code snippet organizer for pro developers

// from | https://github.com/shichuan/javascript-patterns/blob/master/design-patterns/observer.html
var observer = {

    addSubscriber: function (callback) {
        this.subscribers[this.subscribers.length] = callback;
    },
    removeSubscriber: function (callback) {
        for (var i = 0; i < this.subscribers.length; i++) {
            if (this.subscribers[i] === callback) {
                delete(this.subscribers[i]);
            }
        }
    },
    publish: function (what) {
        for (var i = 0; i < this.subscribers.length; i++) {
            if (typeof this.subscribers[i] === 'function') {
                this.subscribers[i](what);
            }
        }
    },
    make: function (o) { // turns an object into a publisher
        for (var i in this) {
            o[i] = this[i];
            o.subscribers = [];
        }
    }
};

var blogger = {
    writeBlogPost: function () {
        var content = 'Today is ' + new Date();
        this.publish(content);
    }
};

var la_times = {
    newIssue: function () {
        var paper = 'Martians have landed on Earth!';
        this.publish(paper);
    }
};

observer.make(blogger);
observer.make(la_times);

var jack = {
    read: function (what) {
        console.log('I just read that ' + what)
    }
};

var jill = {
    gossip: function (what) {
        console.log('You didn\'t hear it from me, but ' + what)
    }
};

blogger.addSubscriber(jack.read);
blogger.addSubscriber(jill.gossip);
blogger.writeBlogPost();
blogger.removeSubscriber(jill.gossip);
blogger.writeBlogPost();
la_times.addSubscriber(jill.gossip);
la_times.newIssue();