Re: [Boost-users] [Boost][Bind] How to bind template function member

From: Marc VIALA (mviala_at_[hidden])
Date: 2006-01-23 14:03:22

Thanks for your help, but...

boost::function<void (void)> pg = boost::bind((void(X::*)(int,int))&X::g,
&x, a, b) ;

Oups, with the correction same result, compilation failed, but not with the
same first message error: " can't convert 'overloaded-function' in 'void
(__thiscall X::* )(int,int)' " now?

Could you give some feedbacks about the reason of the compilation failure?
Is this due to some restrictions on VC++ 7.1?

Thanks in advance.

Best regards,

Marc Viala
mailto:mviala_at_[hidden]

-----Message d'origine-----
De : boost-users-bounces_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] De la part de Rene Rivera
Envoyé : lundi 23 janvier 2006 17:12
À : boost-users_at_[hidden]
Objet : Re: [Boost-users] [Boost][Bind] How to bind template function member

Marc Viala wrote:
> Hi,
> 
> I would like to know how I can use boost::bind with template function
> member? 
> 
> To explain my problem, you will find hereafter an example code that
> demonstrates it. In this code, when we try to bind the function member
> X::g the compiler failed with tons of error message. 
> 
> Am I doing something wrong?
> 
> Best regards,
> 
> Marc Viala
> mailto:mviala_at_[hidden]
> 
> -----------------------------------
> Platform:
> VC++ 7.1
> Boost 1.33.1
> 
> -----------------------------------
> #include <boost/bind.hpp>
> #include <boost/function.hpp>
> 
> struct X {
>   template<typename A, typename B> 
>     void g(A& a, B& b)
>   { std::cout << a << " " << b << '\n' ; }
> 
>   void
>     f(int& i) 
>   { std::cout << i << '\n'; }
> } ;
> 
> template<typename A, typename B> 
>   void e(A& a, B& b)
> { std::cout << a << " " << b << '\n' ; }
> 
> int
> main(int argc, char* argv[])
> {
>   int a = 10, b = 11 ;
>   X x ;
>   boost::function<void (void)> pe = boost::bind(&e<int,int>, a, b) ;
> // <- OK
>   pe() ;
>   boost::function<void (void)> pg = boost::bind(&X::g<int,int>, &x, a,
> b) ; // <- Don't compile?

Try... = boost::bind((void(X::*)(int,int))&X::g,&x,a,b)

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