Nodejs Array Unique unique()

Method Source Code

Array.prototype.unique = function() 
{
// s.unique() -->
// new array with unique elements of s
    var h = {};  // use a hash-sieve
    var r = [];//from  w  ww  .  j a  v a2  s  .  co m
    this.forEach(function (item) { h[item] = true; });
    for (var item in h)
    {
        r.push(item);
    }
    return r; 
}

Related

1. unique()

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

2. 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]);
   ...
   

3. 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;
   ...
   

4. unique()

   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;
   

5. 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;
   

6. 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++) {
   ...
   

7. unique(a)

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

8. unique(a)

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

9. 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++){
   ...