Nodejs Array Different diff(a)

Method Source Code

module.exports = {/*from  ww  w .  j av a  2s. c o m*/
      findMissing :function (a,b){
                 if(a.length === b.length) return 0;
                 
                 if(a.length < b.length) return b.diff(a)[0];
                 
                 return a.diff(b)[0];
               }

};

Array.prototype.diff = function(a) {
    return this.filter(function(i) {return a.indexOf(i) < 0;});
};

Related

1. diff

   Array.prototype.diff =
     function(otherArray) [ i for each( i in this ) if( !otherArray.has( i ) ) ];
   

2. diff( a )

   Array.prototype.diff = function( a ) {
       return this.filter( function( i ) { return !( a.indexOf( i ) > -1 ); } );
   };
   

3. diff(B)

   Array.prototype.diff = function (B) {
       return this.filter(function (a) { return B.indexOf(a) < 0; });
   };
   

4. diff(a)

   Array.prototype.diff = function(a) {
       return this.filter(function(i) {return a.indexOf(i) < 0;});
   };
   

5. diff(a)

   Array.prototype.diff = function (a) {
       return this.filter(function (e) { return a.indexOf(e) === -1 });
   };
   

6. diff(a)

   Array.prototype.diff = function(a) {
       return this.filter(function(i) {return a.indexOf(i) < 0;});
   };
   function diffArray(arr1, arr2) {
     var newArr = [];
     newArr = arr2.diff(arr1);
     return arr1.diff(arr2).concat(arr2.diff(arr1));
   console.log(diffArray([1, 2, 3, 5], [1, 2, 3, 4, 5]));
   ...
   

7. diff(a)

   Array.prototype.diff = function(a) {
     return this.filter(function(i) {return !(a.indexOf(i) > -1);});
   };
   

8. diff(a)

   Array.prototype.diff = function(a) {
       return this.filter(function(i) {return a.indexOf(i) < 0;});
   };
   Array.prototype.contains = function(obj) {
       var i = this.length;
       while (i--) {
           if (this[i] === obj) {
               return true;
       return false;
   };
   function sym(args) {
      var a = args[0].diff(args[1]).concat(args[1].diff(args[0]));  
      var b = args[0].filter(function(n) {
        return args[1].indexOf(n) != -1;
      });
     return a;
   sym([1, 2, 3], [5, 2, 1, 4]);
   

9. diff(a)

   function getSrv(name) {
     return angular.element(document.body).injector().get(name);
   function isNumeric(n) {
     return !isNaN(parseFloat(n)) && isFinite(n);
   function inArray(needle, haystack) {
       var length = haystack.length;
       for(var i = 0; i < length; i++) {
   ...