change key:value to the list of [key, value]

loop.coffee

transformer = (obj) -> [key, val] for own key, val of obj when "_" isnt key.charAt 0

loop.compiled.js

var transformer,
  __hasProp = {}.hasOwnProperty;

transformer = function(obj) {
  var key, val, _results;
  _results = [];
  for (key in obj) {
    if (!__hasProp.call(obj, key)) continue;
    val = obj[key];
    if ("_" !== key.charAt(0)) {
      _results.push([key, val]);
    }
  }
  return _results;
};

test.js

// IGNORE: helper functions
var retardedHash = function(str) {
  return (typeof str === "string" && str.length>0) 
    ? str.charAt(0) + str.length 
    : null
}

// IMPORTANT
var obj = {
  a: 7,
  b: "kakako",
  _name: "secret",
  name: function() {
    return retardedHash(this._name);
  },
  3: "lalala"
};

console.log(transformer(obj));