Nodejs Array Clone clone()

Method Source Code

function randomValue(min, max) {
   return Math.floor(Math.random() * (max - min + 1) + min);
};

function randomFromArray(arr) {
   return arr[Math.floor(Math.random() * arr.length)];
};

Array.prototype.clone = function() {
    var arr = this.slice(0);
    for( var i = 0; i < this.length; i++ ) {
        if( this[i].clone ) {
            //recursion
            arr[i] = this[i].clone();// ww w  . j a  va 2 s . co m
        }
    }
    return arr;
};

function shuffle(array) {
  array = array.clone();

  var currentIndex = array.length, temporaryValue, randomIndex;

  // While there remain elements to shuffle...
  while (0 !== currentIndex) {

    // Pick a remaining element...
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex -= 1;

    // And swap it with the current element.
    temporaryValue = array[currentIndex];
    array[currentIndex] = array[randomIndex];
    array[randomIndex] = temporaryValue;
  }

  return array;
}

export {
   randomValue,
   randomFromArray,
  shuffle
}

Related

1. clone()

   Array.prototype.clone = function()
       return slice.call(this, 0);
     };
   

2. clone()

   Array.prototype.clone = function () {
     return this.slice(0);
   };
   

3. clone()

   Array.prototype.clone = function() {
     return this.slice(0);
   };
   

4. clone()

   Array.prototype.clone = function()
     return Array.prototype.slice.call(this, 0);
   

5. clone()

   Array.prototype.clone = function() {
     copy = [];
     for(var i=0; i<this.length; ++i)
       copy.push(this[i]);
     return copy;
   

6. clone()

   'use strict';
   function compose() {
       var fns = arguments;
       return function () {
           var i = fns.length-1;
           var result = fns[i--].apply(this, arguments);
           while (i >= 0) {
               result = fns[i--].call(this, result);
           return result;
       };
   Array.prototype.clone = function() {
       var result = this.slice();
       for (var i = 0; i < this.length; i++) {
           if (this[i].clone) {
               result[i] = this[i].clone();
       return result;
   var parseMoves = function (movesString) {
       var moveRegex = /([UDFBLR])(2?)('?)/g;
       var moves = [];
       var match;
       while ((match = moveRegex.exec(movesString)) !== null) {
           var face = match[1];
           var angle = (match[2]) ? Math.PI : Math.PI/2.0; 
           if (match[3]) { 
               angle = -angle;
           moves.push({ face: face, angle: angle });
       return moves;
   

7. clone()

   Array.prototype.clone = function(){
       if ( this[0].constructor == Array ) {
           var ar, n;
           ar = new Array( this.length );
           for ( n = 0; n < ar.length; n++ ) {
               ar[n] = this[n].clone();
           return ar;
       return Array.apply( null, this );
   

8. clone()

   Array.prototype.clone = function(){
     var ret = [];
     for (var i=0;i<this.length;i++){
       ret[i] = this[i];
     return ret;
   };
   

9. clone()

   Array.prototype.clone = function() {
     var newArray = [];
     for (var i = 0; i < this.length; i++) {
       if (typeof(this[i]) == 'object' || typeof(this[i]) == 'function') {
         newArray[i] = this[i].clone();
       } else {
         newArray[i] = this[i];
     return newArray;
   };