Question

The dictionary use strict equals(===) for key comparison, how to change the comparison, so I can use my standard for comparison, for example, I have a class named Student:

    class Student{
     var id:int;
     var name:String;
     var age:int;
    //constructor
   Student(id:int,name:String,age:int){
         this.id = id;
         this.name = name;
         this.age = age;
      }
    }

I want Dictionary use id to compare if the two keys are equal, not use strict equal(===) to compare if the key is the same.

Answer 1

you can do next:

class Student{
 var id:int;
 var name:String;
 var age:int;
Student(id:int,name:String,age:int){
     this.id = id;
     this.name = name;
     this.age = age;
  }
    public function equals(s:Student):Boolean{
        return ((this.id==s.id)&&(this.name==s.name)&&(this.age==s.age));
    }
}

so later use it like:

var d:Dictionary=new Dictionary();
d["key"]=new Student();
//snippet
(d["key"] as Student).equals(new Student());

also if you want to overload as3 operators read next things:

Overload [] operator in AS3
http://livedocs.adobe.com/flex/3/langref/flash/utils/Proxy.html

Best Regards
Eugene