Nodejs Array Compact compact()

Method Source Code

Array.prototype.compact = function(){
    var compacted = [];
    for(var i = 0; i < this.length ; i++){
        if(this[i]){
            compacted.push(this[i]);//ww  w .  jav a  2 s.  co m
        }
    };
    return compacted;
};

Related

1. compact()

   Array.prototype.compact = function() {
     return this.select(function(value) {
       return value != null;
     });
   };
   

2. compact()

   Array.prototype.compact = function() {
     return this.filter(function(item) {
       return !!item;
     });
   Object.prototype.compact = function() {
     var key, compacted;
     compacted = {};
     for(key in this) {
   ...
   

3. compact()

   Array.prototype.compact = function () { 
     return this.filter((a) => a) 
   

4. compact()

   Array.prototype.compact = function()
       var a = [];
       for( var i = 0; i < this.length; i++ ) {
           if( i in this ) 
               if( this[ i ] != "" ) a.push( this[ i ] );
       return a;
   };
   ...
   

5. compact()

   Array.prototype.compact = function(){
       var ca = [];
       for(var i in this){
           if (this.hasOwnProperty(i)) {
               if ( present(this[i]) ) {
                   ca.push(this[i]);
       return ca;
   };
   

6. compact()

   Array.prototype.compact = function () {
     return this.filter((value) => {
       return value;
     });
   };
   

7. compact()

   Array.prototype.compact = function() {
     return this.filter(function(i) {if (i) return true})
   Array.prototype.collect = function(key) {
     return this.map(function(i){return i[key]})
   Array.prototype.avg = function(key) {
     return eval(this.join('+')) / this.length;
   Array.prototype.stats = function() {
     var avg = this.avg();
     var diff2 = this.map(function(i) {return (i-avg)*(i-avg)});
     var diff2avg = diff2.avg();
     return {
       diff2: diff2,
       var: diff2avg,
       std: Math.sqrt(diff2avg),
       avg: avg,
       total: this.length
   Array.prototype.reduceToHash = function(key, val) {
     var tmp = {};
     this.forEach(function (i) {
       var k = i[key];
       var v = i[val];
       if (!tmp.hasOwnProperty(k))
         tmp[k] = [];
       tmp[k].push(v)
     });
     return tmp;
   

8. compact()

   Array.prototype.compact = function() {
     return this.reduce(function(res, el) {
       if(el !== null) {
         res.push(el);
       };
       return res;
     }, [])
   

9. compact()

   Array.prototype.compact = function() {
       return this.filter(function (i) {
           return !!i;
       });
   };