Nodejs Array Unique unique(a)

Method Source Code

/**//  ww w.  j  av  a2s  .  c o m
 * This file contains prototype extensions for default javascript handlers
 */

/**
 * Array unique for javascript array.
 *
 * @type    {Array.prototype.unique}
 *
 * @returns {array}
 */
Array.prototype.unique = function(a) {
    return function(){return this.filter(a)}}(function(a,b,c){return c.indexOf(a,b+1)<0
});

Related

1. 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; 
   

2. 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++) {
   ...
   

3. unique(a)

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

4. unique(a)

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

5. unique(a)

   x = ''
   Array.prototype.unique=function(a){
     return function(){return this.filter(a)}}(function(a,b,c){return c.indexOf(a,b+1)<0
   });
   function getCombi(vect,res,n,r){
      if(n == 0){
         x = x + res +":";
      }else{
         for(var i = 0; i < r; i++){
   ...
   

6. unique(b)

   Array.prototype.unique = function(b) {
       var a = [], i, l = this.length;
       for (i = 0; i < l; i++) {
           if (a.indexOf(this[i], 0, b) < 0) {
               a.push(this[i]);
       return a;
   };
   ...
   

7. unique(b)

   Array.prototype.unique = function(b) {
     var a = [], i, l = this.length;
     for (i = 0; i < l; i++) {
       if (a.indexOf(this[i], 0, b) < 0) {
         a.push(this[i]);
     return a;
   };
   ...
   

8. unique(callback)

   Array.prototype.unique = function(callback) {
     var o = {}, i, l = this.length, r = [];
     for (i=0; i<l; i+=1) {
       var val = callback(this[i]);
       o[val] = this[i];
     for (i in o) {
       r.push(o[i]);
     return r;
   };
   

9. unique(data)

   Array.prototype.unique = function(data) {
     data.sort();
     var re = [ data[0] ];
     var length = data.length;
     for (var i = 1; i < length; i++) {
       if (data[i] !== re[re.length - 1]) {
         re.push(data[i]);
     return re;
   };