Sliwa, Przemyslaw (London) wrote:

I would like to write a template which depending on the argument type does different things.

For example the pseudo code:

template foo(T& nT, C& nC) { // common code; if(T==C) // specific code; .....

// again common code; }

Can the template meta programming help me in this case?

It may. It depends on whether "specific code" compiles when T!=C. If it does, you could do this: template void foo(T& nT, C& nC) { // common code if(boost::is_same::value) { /* specific code */ } // again common code } where is is_same<> is defined in boost/type_traits/is_same.hpp. If "specific code" doesn't compile when T!=C, you need to get fancier. An overloaded helper function is the way to go: template void specific_code(T&, C&) {} template<class T> void specific_code(T&, T&) { // specific code here } template void foo(T& nT, C& nC) { // common code specific_code(nT, nC); // again common code } HTH, -- Eric Niebler Boost Consulting www.boost-consulting.com