Hi!

I have these to methods:

public override bool Equals(object obj)
       {
           if (obj == null)
               return false;

           Arg a = obj as Arg;
           if (t == null)
               return false;

           return Id == t.Id;
       }
       public static bool operator ==(Arg left, Arg right)
       {
           
           return left.Equals(right);
       }
I want to check if argument left is null in the ==method. But if i do it
like this
if(left == null)
that causes an infinite recursive call. So any suggestions on how to solve
this problem?