[Boost-users] [preprocessor] concatenating values to create typedef permutations

Hi, I am trying to use the preprocessor iteration ability to create typedef permutations. I want to do something like use the following set of types TYPE1: char int float TYPE2: char int float double to generate permutations of MyClass<TYPE1,TYPE2> such as typedef MyClass<char,char> Mycc; typedef MyClass<char,int> Myci; typedef MyClass<char,float> Mycf; ... Any help would be greatly appreciated. Thanks, Chris