Nodejs Array Minus minus(secondarr)

Method Source Code

Array.prototype.minus = function(secondarr){
  // subtracts the secondarr from this,
  // works best with arrays of strings
  var result = this;
  for (var i = result.length - 1; i >= 0; i--) {
    for (var j = secondarr.length - 1; j >= 0; j--) {
      if (secondarr[j].match(result[i])){
        result = result.without(i);//  www  .j a  va2s .  c om
        break;
      };
    };
  };
  return result;
};

Related

1. minus(arr)

   Array.prototype.minus = function (arr) {
       var result = new Array();
       var obj = {};
       for (var i = 0; i < arr.length; i++) {
           obj[arr[i]] = 1;
       for (var j = 0; j < this.length; j++) {
           if (!obj[this[j]])
               obj[this[j]] = 1;
               result.push(this[j]);
       return result;
   };
   

2. 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;
   };
   

3. 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;
   };
   

4. minus(other)

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

5. minus(other, test)

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

6. minusAsString(list)

   Array.prototype.minusAsString = function (list) {
       var result = [];
       for (var i = 0; i < this.length; i++) {
           var notIn = true;
           for (var j = 0; j < list.length; j++) {
               if (list[j].toString() == this[i].toString()) {
                   notIn = false;
                   break;
           if (notIn)
               result.push(this[i]);
       return result;
   };
   

7. minusIndex(idx)

   Array.prototype.minusIndex = function(idx) {
       if(idx < 0 || idx >= this.length) return this;
       return this.slice(0, idx).concat(this.slice(idx + 1));