Is Template Metaprogramming faster than the equivalent C code ? ( I\'m talking about the runtime performance) :)
Template metaprogramming can be thought of as compile-time execution.
The compile-time is going to take longer to compile your code since it has to compile and then execute the templates, generate code, then compile again.
The run-time overhead I am not sure about, it shouldn't be much more than if you wrote it yourself in C code I would imagine.