Re: [Boost-users] [bind] Pointer to functions as template parameters

From: Bruno Martínez (br1_at_[hidden])
Date: 2005-09-15 11:57:11

>> template <class T, T&>
>> struct nontypeadapt;
>>
>> template<class Ret, Ret (&func)()>
>> struct nontypeadapt <Ret(), func> {
>>     typedef Ret result_type;
>>     Ret operator() () { return func(); }
>> };
>>
>> then
>>
>> typeid(boost::bind(nontypeadapt<void(), func1>())) !=
>> typeid(boost::bind(nontypeadapt<void(), func2>()))
>>
>> However, the signature has to be given at the call site, it's repetitive
>> to define all specializations of nontypeadapt, and it brings more
>> forwarding problems of it's own.  Any ideas?
>
> I think you can only pass functions with external linkage as
> parameters to templates, which I think it makes it unusable...

I believe that's true, yes, but it's usable nonetheless.  The assembler  
generated by vc71 for a bind with nontypeadapt is better, too.

Bruno