Nodejs Array Push Unique pushUniq(el, test)

Method Source Code

Array.prototype.pushUniq = function(el, test) {
    if (test == null) {
        if (this.indexOf(el) < 0) {
            this.push(el);//from  w  w  w.  j a  v a 2 s .c o  m
            return true;
        }
        return false;
    }
    for (var i = this.length; --i >= 0;)
        if (test(this[i], el)) return false;
    this.push(el);
    return true;
};

Related

1. pushIfUnique(entryIn)

   Array.prototype.pushIfUnique = function(entryIn){
       var arr = this;
       var unique = true;
       arr.forEach(function(entry){
           if(entryIn === entry){
               unique = false;
       });
       if(unique){
   ...
   

2. pushUnique(item)

   Array.prototype.pushUnique = function(item){
       if(this.indexOf(item) === -1) this.push(item);
   

3. pushUnique(item)

   Array.prototype.pushUnique = function (item){
       if(this.indexOf(item) === -1) {
           this.push(item);
           return true;
       return false;
   };
   

4. pushUnique(item)

   Array.prototype.pushUnique = function (item) {
       if (this.indexOf(item) == -1) {
           this.push(item);
           return true;
       return false;
   };
   String.prototype.repeat = function (num) {
       return new Array(num + 1).join(this);
   ...
   

5. pushUnique(item,unique)

   Array.prototype.pushUnique = function(item,unique)
     if(unique === false) {
       this.push(item);
     } else {
       if(this.indexOf(item) == -1)
         this.push(item);
   };
   ...