Nodejs Array Copy copy()

Method Source Code

// return array of length n with all elements initialized to e
// from Crockford, JavaScript: The Good Parts
Array.dim = function (n, e) {
   var a = [], i;
   for (i = 0; i < n; i += 1) {
      a[i] = e;//from ww  w.  ja  va 2 s .c  o m
   }
   return a;
}

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


Array.prototype.isEmpty = function () {
   return (this.length === 0);
}

Related

1. copy( ()

   Array.prototype.copy = (function () {
     var f = function (o) {
       return o;
     };
     return function () {
       return this.map(f);
     };
   }());
   

2. copy()

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

3. copy()

   Array.prototype.copy = function(){
     return this.filter(function(){return true;});
   };
   

4. copy()

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

5. copy()

   Array.prototype.copy = function() {
       var copy = [];
       this.forEach(function(element) {
           copy.push(element);
       });
       return copy;
   };
   

6. copy()

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