From: Gennadiy E. Rozental (rogeeff_at_[hidden])
Date: 2001-10-22 13:21:37
What compiler ar you using? If it MSVC it's appears to be known issue
and usin gtemporary could help.
--- In boost_at_y..., brownell_at_a... wrote:
> I don't think this is a problem with bind, but more of a C++ issue,
> so my apologies if this is a bit off topic. I am passing a
template
> function to bind, and the resulting "bound" function is used as the
> UnaryFunction in std::for_each. When I compile this application,
> everything works as expected, but when the linker does its thing,
it
> can't find the template function. If I make a dummy call to the
> template function, the function code is created and the linker is
> happy. Is there a way I can make this all work without the dummy
> call to the template function? I have a code example illustrating
> the problem below.
>
> Thanks in advance for your help!
> Dave
>
> #include<vector>
> #include<algorithm>
>
> #include "boost\bind.hpp"
>
> template<class T>
> bool TemplateFunction(T &t)
> {
> t = 2;
> return(true);
> }
>
> int main(void)
> {
> std::vector<unsigned long> v;
>
> v.resize(10);
>
> //If this code segment is commented, it will not link.
Uncomment
> // to resolve the link error
> /*{
> unsigned long ulTemp;
>
> TemplateFunction(ulTemp);
> }*/
>
bool (*temp)( unsigned long& ) = &TemplateFunction<unsigned long>;
std::for_each(v.begin(), v.end(), boost::bind(temp, _1));
return(1);
> }