How to check at compile time if Default Constructor for a class exists?

[Bottled Gin via Digitalmars-d]

Hello Folks

When I try using TypeInfo_Class.defaultConstructor during compile 
time, I get:

> typeid(Foo).defaultConstructor is not yet implemented at 
> compile time

Is there any other way to find out at compile time if a default 
constructor exists for a given class?

Regards
- Puneet