[boost] FC++ examples?

Hello, I wasn't able to review FC++ due to lack of time. Nonetheless, I have been following the reviews to gather what I can about this library. What am I basically missing is the most obvious question: what is this library for? Boost libraries mostly solve real-life problems of C++ coders. FC++ tries to add FP programming capabilities to C++, but I can't see how this is going to help, within a normal C++ program. The quicksort example was very cool, but it turns out that the generated code is too slow to be used for everything. If I need FP everywhere, I change language. Are there a couple of examples showing real-life C++ problems that can be solved with the help of FC++? -- Giovanni Bajo