Sebastian Weber

Hello everybody!

I ran into a very weird problem with boost::bind and boost::function. I am using boost 1.33.1 with a g++ 4.0.3 on a Ubuntu dapper system. The code which does not compile is:

boost::function< double(double) > pFunc = boost::bind(std::pow, _1, -3); ... You have to specify which overloaded version of std::pow() you'd like to use:

boost::function pFunc = boost::bind(std::pow, _1, -3); In this example placeholder's presence doesn't matter. Simplified version w/o placeholder: boost::function pFunc = boost::bind(std::pow, 0.0, 0.0); requires explicit template parameter too, regardless of the fact that both arguments can be deduced as doubles and so, only one overloaded version is the best match. This can be illustrated by simpler example: template <typename F> void foo(F f) {} foo(std::pow); // ERROR, should be "foo(std::pow);" or other overloads HTH, Andriy Tylychko, telia@vichnavich.com