goatslacker

var arr = [1, "2", null, 4, undefined, 6, 7, 8];                                                                                                                                                                                                                                         

var j = {
  step: function (arr) {
    var current = -1;
    var len = arr.length;
    var err = new Error("End of list");
    return {
      current: function () {
        if (current < 0 || current >= len) {

goatslacker

Object.defineProperty(Object.prototype, "clone", {
  value: function (proto) {
    this.prototype = Object.create(proto.prototype, {
      _super: {
        value: proto.prototype
      }
    });
  },
  configurable: false,
  enumerable: false,

goatslacker

var o = {
  value: 4,
  left: {
    value: 25,
    left: {
      value: 1
    },
    right: {
      value: 7
    }

goatslacker

var o = {
  value: 1,
  left: {
    value: 2,
    left: {
      value: 4
    },
    right: {
      value: 5
    }

goatslacker

var o = {
  value: 1,
  left: {
    value: 2,
    left: {
      value: 4
    },
    right: {
      value: 5
    }

goatslacker

var o = {
  value: 1,
  left: {
    value: 2,
    left: {
      value: 4
    },
    right: {
      value: 5
    }

goatslacker

var o = {
  value: 1,
  left: {
    value: 2,
    left: {
      value: 4
    },
    right: {
      value: 5
    }

goatslacker

var o = {
  value: 1,
  left: {
    value: 2,
    left: {
      value: 4
    },
    right: {
      value: 5
    }

goatslacker

var o = {
  value: 1,
  left: {
    value: 2,
    left: {
      value: 4
    },
    right: {
      value: 5
    }

goatslacker

var o = {
  value: 4,
  left: {
    value: 25,
    left: {
      value: 1
    },
    right: {
      value: 22
    }