SOURCE

console.log(_.random(33))

var users = [
  { 'user': 'barney', 'age': 36, 'active': false },
  { 'user': 'fred',   'age': 40, 'active': true }
];
var t1 = _.reject(users, function(o) { return !o.active; })

console.log(JSON.stringify(t1))

// 常用函数
var array = [1, 2, 3, 4];
var evens = _.remove(array, function(n) {
  return n % 2 == 0;
});

console.log(evens)

// 差异
console.log(_.difference([1,2,3],[2,3]))

//唯一值  合并重复 去重
console.log(_.union(['苹果'], ['苹果', '香蕉']))


let es6 = {
  edition: 6,
  committee: "TC39",
  standard: "ECMA-262"
};
console.log(Object.keys(es6))
console.log(Object.values(es6))