gistfile1.txt

var memoize = {

    keys:{},
    set: function(key, value) { // set a key, value pair, return value
        this.keys[key] = value;
        return value;
    },
    clear: function( ) {
        this.keys = {}; // set in memoize keys, and return result
        return this.key;
    },
    remove: function(key) {
        this.keys[key] = key;
        delete this.keys[key];
    },
    get: function(key, value, callback) { // get a key
        //return key if it exists
        if(this.keys[key]) {
            console.log(this.keys[key]);
            return this.keys[key];
        }
        //if no key and callback is present
        if (typeof callback === "function") {
            var that = this;
           value(function(response){
               console.log("received response");
               that.set(key, response);
               callback(response); //callback exe
            });
        }
        //if no key or callback
        else if(typeof value === "function") {
            var valueResult = value.call(this, key); // store result of finder function
            if(valueResult) { // if result is not null
                return this.set(key, valueResult); // set in memoize keys, and return result
                } else{
                    //set value
            }
        }
    }
 };