[Boost-users] Creating a map between two sets of classes

Hi, I have a requirement where in i have a set of classes and they have a one on one correspondence with another set of classes. Consider something like this a) template<class A> class Walkers { int walk( Context<A>* context ); }; The set of Context classes are not templates. They are individual classes. I need to create a mapping between these two sets. One way, i could think of is to create a typelist and refer to the class at the appropriate location. But i feel that is more error prone, as i may mismatch the Contexts in the typelist. Can someone advise me how to do this using any of the boost libraries? Thanks, Gokul.