unary operator overloading syntax

[Lutger]

Robert M. Münch wrote:

> Hi, why does this work:
> 
> void* opUnary(string s)() if (s == "*"){...
> 
> but this not:
> 
> void* opUnary("*")() {...
> 
> 
> If the first syntax is the only possible one, can I have several
> opUnary entries per struct/class or do I have to build a big switch
> inside the code section and use "s" to dispatch to correct handler?
> 

(string s) is a (template) parameter to opUnary, containing the operator to be matched, so only the latter is valid 
syntax. You can have multiple opUnary templates distinguished by constraints, or a switch, or a combination thereof.