Re: [Boost-users] [lambda][phoenix] make lambda/phoenix play well with std::complex, imag, real, abs, etc.

On Sun, Jun 6, 2010 at 4:41 PM, Joel de Guzman wrote:

Is there a reason why you are not using plain phoenix::function(s) for this?

good point, I am still phoenix-challenged I guess. I got driven by the "Composite" example in the manual. This is the alternative implementation using phoenix::function: namespace boost{namespace phoenix{ struct real_impl{ template <typename Arg> struct result{ typedef double type; //can be generalized }; template <typename Arg> typename result<Arg>::type operator()(Arg z) const{ return real(z); } }; function real_; // "real" as name doesn't work }} int main(){ std::complex<double> z(1.,2.); cout << real_(arg1)(z) <