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

Bottled Gin via Digitalmars-d digitalmars-d at
Fri Jan 1 07:55:53 PST 2016

> You might be able to just do `static if(__traits(compiles, new 
> YourClass()))` and if it returns true then figure it does.

That gives me a false positive if a defined constructor has 
default value for all its arguments.

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