[boost] Re: Macro for using overloaded functions with templated code.

From: Daniel James (daniel_at_[hidden])
Date: 2004-11-18 10:18:39

Jonathan Wakely wrote:
> In fact, I get a similar error for the example code in your mail:
> 
> overloaded.cc: In member function `ResultType GENERATE_DETAIL::foo_overloaded_t<ResultType>::operator()() const':
> overloaded.cc:7: error: no matching function for call to `foo()'
> overloaded.cc:4: note: candidates are: void foo(int)
> overloaded.cc:5: note:                 void foo(char*)
> 
> So although I can see uses for this, I can't use it  :-)

Oh dear. I hadn't tested it very thoroughly - it works on g++ versions 
2.95 and 3.3, but not 3.4 (which I guess you're using). I'm not sure 
it's possible to deal with this on a compiler which implements two-phase 
template instantiation, since the nullary function isn't a template 
function. It might be best just to remove it, since I don't think it's 
that useful anyway. Unless anyone's got a better idea.

Daniel