Ratchet.js

// Ratchet.js
// ----------
//
// Pass numbers to Ratchet object using the .add(val) method
// and retrieve the min and max value with .min() and .max()
// Or write custom methods using the .f method used to 
// implement the .min() and .max() methods.

// Constructor
// ex: var r = new Ratchet();
Ratchet = function (){
    this.__vals = [];
}

// Get the values that have been passed to the ratchet
// ex: r.vals()
Ratchet.prototype.vals = function (){
    return this.__vals;
}

// Apply a function to the values array
Ratchet.prototype.f = function(f) {
    return f.apply(null, this.__vals);
}

// Get the max value in the values array
Ratchet.prototype.max = function() {
    return this.f(Math.max);
}

// Get the min value
Ratchet.prototype.min = function() {
    return this.f(Math.min);
}

// Add a new value
// ex: r.add(10);
//     r.add(20);
//     r.max(); // returns 20
Ratchet.prototype.add = function (val) {
    this.__vals.push(val);
    return this
}