Nodejs Array Unique unique()

Method Source Code

/**//from   w  w  w  .j a va2s  .  c  o  m
 * Return a unique array
 */
Array.prototype.unique = function(){
   var new_array = [];
   for (var i=0; i < this.length; i++) {
      if(!new_array.contains(this[i])) new_array.push(this[i]);
   }
   return new_array;
}

Related

1. unique()

   Array.prototype.unique = function () {
     var r = [];
     o: for (var i = 0, n = this.length; i < n; i++) {
       for (var x = 0, y = r.length; x < y; x++) {
         if (r[x] == this[i]) {
           continue o;
       r[r.length] = this[i];
   ...
   

2. unique()

   Array.prototype.unique = function(){
       var i,j,len = this.length,tempArr = [],tempLen,state;
       for(i = 0 ; i < len ; i++){
           tempLen = tempArr.length;
           state = true;
           for(j = 0 ; j<tempLen;j++){
               if(this[i] == tempArr[j]){
                   state = false;
           if(state){
               tempArr.push(this[i]);
       return tempArr;
   };
   

3. unique()

   Array.prototype.unique = function() {
     var r = [];
     this.each(function(key, value) {
       if (!r.contains(value)) {
         r.push(value);
     });
     return r;
   };
   ...
   

4. unique()

   Array.prototype.unique = function() {
     var a = [];
     var l = this.length;
     for(var i=0; i<l; i++) {
       for(var j=i+1; j<l; j++) {
         if (this[i] === this[j])
           j = ++i;
       a.push(this[i]);
   ...
   

5. unique()

   Array.prototype.unique = function() {
     var aryToReturn = Array();
     for (var i = 0; i < this.length; i++) {
       var val = this[i];
       if (undefined === aryToReturn.findFirst(function() {return this == val})) {
         aryToReturn.push(val);
     return aryToReturn;
   ...
   

6. unique()

   Array.prototype.unique = function(){
     this.sort((x,y) => x-y);
     for(var i=0; i<this.length-1; ){
       if(this[i]==this[i+1])
         this.splice(i,1);
       else i++;
     return this;
   

7. unique()

   Array.prototype.unique = function() 
       var h = {};  
       var r = [];
       this.forEach(function (item) { h[item] = true; });
       for (var item in h)
           r.push(item);
       return r; 
   

8. unique()

   Array.prototype.unique = function() {
     var uniqueArray = new Array();
     for(var i = 0; i < this.length; i++) {
       for(var j = i+1; j < this.length+1; j++) {
         if (this[i] !== null && this[i] === this[j]) 
           this[j] = null;
     for(i = 0; i < this.length; i++) {
   ...
   

9. unique(a)

   Array.prototype.unique=function(a){
     return function(){return this.filter(a)}}(function(a,b,c){return c.indexOf(a,b+1)<0
   });