source: Dev/trunk/src/client/dojox/collections/Set.js

define(["./_base", "./ArrayList"], function(dxc, ArrayList){

        dxc.Set=new (function(){
                function conv(arr){
                        if(arr.constructor==Array){
                                return new ArrayList(arr);      //      dojox.collections.ArrayList
                        }
                        return arr;             //      dojox.collections.ArrayList
                }
                this.union = function(/*array*/ setA, /*array*/ setB){
                        // summary:
                        //              Return the union of the two passed sets.
                        setA=conv(setA);
                        setB=conv(setB);
                        var result = new ArrayList(setA.toArray());
                        var e = setB.getIterator();
                        while(!e.atEnd()){
                                var item=e.get();
                                if(!result.contains(item)){
                                        result.add(item);
                                }
                        }
                        return result;  //      dojox.collections.ArrayList
                };
                this.intersection = function(/*array*/ setA, /*array*/ setB){
                        // summary:
                        //              Return the intersection of the two passed sets.
                        setA=conv(setA);
                        setB=conv(setB);
                        var result = new ArrayList();
                        var e = setB.getIterator();
                        while(!e.atEnd()){
                                var item=e.get();
                                if(setA.contains(item)){
                                        result.add(item);
                                }
                        }
                        return result;  //      dojox.collections.ArrayList
                };
                this.difference = function(/*array*/ setA, /*array*/ setB){
                        // summary:
                        //              Returns everything in setA that is not in setB.
                        setA=conv(setA);
                        setB=conv(setB);
                        var result = new ArrayList();
                        var e=setA.getIterator();
                        while(!e.atEnd()){
                                var item=e.get();
                                if(!setB.contains(item)){
                                        result.add(item);
                                }
                        }
                        return result;  //      dojox.collections.ArrayList
                };
                this.isSubSet = function(/*array*/ setA, /*array*/ setB) {
                        // summary:
                        //              Returns if set B is a subset of set A.
                        setA=conv(setA);
                        setB=conv(setB);
                        var e = setA.getIterator();
                        while(!e.atEnd()){
                                if(!setB.contains(e.get())){
                                        return false;   //      boolean
                                }
                        }
                        return true;    //      boolean
                };
                this.isSuperSet = function(/*array*/ setA, /*array*/ setB){
                        // summary:
                        //              Returns if set B is a superset of set A.
                        setA=conv(setA);
                        setB=conv(setB);
                        var e = setB.getIterator();
                        while(!e.atEnd()){
                                if(!setA.contains(e.get())){
                                        return false;   //      boolean
                                }
                        }
                        return true;    //      boolean
                };
        })();
        return dxc.Set;
});