super constructors: I can't take it anymore!

[nobody]

Serg Kovrov wrote:

> Here is my near-real class hierarchy:
>> class BaseWindow {
      uint registerID; // inits to 0
>>   this() {
      if(registerID == 0) // nonzero registerID skips this step
      {
        registerID = register(...);
>>     writefln("register BaseWindowClass");

      }
>>     writefln("create");
>>   }
>> }
>> class FrameWindow : BaseWindow {
>>   this(char[] caption) {
      if(registerID == 0) // nonzero registerID skips this step
      {
        registerID = register(...);
>>     writefln("register FrameWindowClass");
      }
>>     writefln("create %s", caption);
>>   }
>> }
>> class MyFrameWindow : FrameWindow {
>>     this(char[] caption) {
>>         super(caption);
>>     }
>> }

> What I want is that the only constructor called were 
> FrameWindow.this(char[]), to have *only* this:
>> register FrameWindowClass
>> create test

I think caching some value which shows you have already registered should keep 
any parents from registering again since the child's ctor should always be 
called first.