mkuklis

6 falsy values in JS:

- false
- null
- undefined 
- '' // empty string 
- 0 // number 0
- NaN

all other values are truthy (including "false") 

mkuklis

Function.prototype.method = function (name, func) { 
  if (!this.prototype[name]) {
    this.prototype[name] = func; 
    return this;
  }
};

mkuklis

var constructor = function (spec, my) { 
  var that, other private instance variables; 
  my = my || {};
  Add shared variables and functions to my 

  that = a new object; 

  Add privileged methods to that 

  return that;

mkuklis

var memoizer = function (memo, formula) { 
  var recur = function (n) {
    var result = memo[n]; 
    if (typeof result !== 'number') {
      result = formula(recur, n); memo[n] = result;
    } 
    return result;
  }; 
  return recur;
};

mkuklis

var foo1 = {
  name: "hello from foo1",
  print: function () {
    return this.name;
  } 
};

var foo2 = {
 name: "hello from foo2"
};

mkuklis

if (typeof Array.isArray === "undefined") { 
  Array.isArray = function (arg) {
    return Object.prototype.toString.call(arg) === "[object Array]";
  };
}

mkuklis

var doThisDoThat = function () {
  console.log("do this");
  doThisDoThat = function () {
    console.log("do that");
  };
};

doThisDoThat() // do this
doThisDoThat() // do that

mkuklis

function inherit(C, P) { 
  var F = function () {}; 
  F.prototype = P.prototype; 
  C.prototype = new F(); 
  C._super = P.prototype; 
  C.prototype.constructor = C;
}

mkuklis

// https://gist.github.com/854622
(function(window,undefined){
	
	// Prepare our Variables
	var
		History = window.History,
		$ = window.jQuery,
		document = window.document;

	// Check to see if History.js is enabled for our Browser

mkuklis

/Users/mkuklis/.rvm/gems/ruby-1.9.2-p180@iYouVo/gems/carrierwave-0.5.4/lib/carrierwave/processing/rmagick.rb:248: [BUG] Segmentation fault
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.7.0]

-- control frame ----------
c:0112 p:---- s:0553 b:0553 l:000552 d:000552 CFUNC  :read
c:0111 p:0054 s:0549 b:0549 l:000548 d:000548 METHOD /Users/mkuklis/.rvm/gems/ruby-1.9.2-p180@iYouVo/gems/carrierwave-0.5.4/lib/carrierwave/processing/rmagick.rb:248
c:0110 p:0011 s:0540 b:0540 l:000539 d:000539 METHOD /Users/mkuklis/.rvm/gems/ruby-1.9.2-p180@iYouVo/gems/carrierwave-0.5.4/lib/carrierwave/processing/rmagick.rb:132
c:0109 p:0015 s:0535 b:0535 l:000525 d:000534 BLOCK  /Users/mkuklis/.rvm/gems/ruby-1.9.2-p180@iYouVo/gems/carrierwave-0.5.4/lib/carrierwave/uploader/processing.rb:77
c:0108 p:---- s:0531 b:0531 l:000530 d:000530 FINISH
c:0107 p:---- s:0529 b:0529 l:000528 d:000528 CFUNC  :each