Nodejs Array Minus minus(arr)

Method Source Code

Array.prototype.minus = function (arr) {
    var result = new Array();
    var obj = {};
    for (var i = 0; i < arr.length; i++) {
        obj[arr[i]] = 1;//from w w w. j a  v a2 s  . com
    }
    for (var j = 0; j < this.length; j++) {
        if (!obj[this[j]])
        {
            obj[this[j]] = 1;
            result.push(this[j]);
        }
    }
    return result;
};

Related

1. minus(a)

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

2. minus(a, b)

   Array.minus = function(a, b){
        return a.uniquelize().each(function(o){return b.contains(o) ? null : o});
   };
   

3. minus(b)

   Array.prototype.minus = function(b) {
     var array = new Array();
     var ua = this.uniquelize();
     var length = this.length;
     for (var i = 0; i < length; i++) {
       if (!b.inArray(ua[i])) {
         array.push(ua[i]);
     return array;
   };
   

4. minus(list)

   Array.prototype.minus = function (list) {
       var result = [];
       for (var i = 0; i < this.length; i++) {
           if (list.indexOf(this[i]) < 0)
               result.push(this[i]);
       return result;
   };
   

5. minus(other)

   Array.prototype.minus = function(other) {
       if (typeof(other) == "undefined") {
           return this;
       return this.where(function(e) {
           return !other.contains(e);
       });
   };
   

6. minus(other, test)

   Array.prototype.minus = function(other, test) {
       return this.filter(function(el){
           return !other.contains(el, test);
       });
   };