Nodejs Array Unique unique()

Here you can find the source of unique()

Method Source Code

Array.prototype.unique = function () {
   var r = [];//w w w . jav a 2s.c  o  m
   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];
   }
   return r;
};

Related

  1. unique()
    Array.prototype.unique = function() {
        return this.reduce(function(accum, current) {
            if (accum.indexOf(current) < 0) {
                accum.push(current);
            return accum;
        }, []);
    };
    function mutation(arr) {
    ...
    
  2. unique()
    Array.prototype.unique = function() {
        var a = this.concat();
        for(var i=0; i<a.length; ++i) {
            for(var j=i+1; j<a.length; ++j) {
                if(a[i] === a[j])
                    a.splice(j--, 1);
        return a;
    ...
    
  3. unique()
    Array.prototype.unique = function()
        this.sort();
        var re=[this[0]];
        for(var i = 1; i < this.length; i++)
            if( this[i] !== re[re.length-1])
                re.push(this[i]);
    ...
    
  4. unique()
    Array.prototype.unique = function() {
      var n = {},r=[];
      for(var i = 0; i < this.length; i++) {
        if ( this[i] && !n[this[i]]) {
          n[this[i]] = true;
          r.push(this[i]);
      return r;
    ...
    
  5. unique()
    Array.prototype.unique = function () {
      var obj,
        result = [];
      for (var i = 0, l = this.length; i < l; ++i) {
        obj = this[ i ];
        if ( result.indexOf( obj ) < 0 ) {
          result[ result.length ] = obj;
      return result;
    };
    
  6. 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;
    };
    
  7. unique()
    Array.prototype.unique = function() {
      var r = [];
      this.each(function(key, value) {
        if (!r.contains(value)) {
          r.push(value);
      });
      return r;
    };
    ...
    
  8. 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]);
    ...
    
  9. 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;
    ...