Real programming in Prolog. Eiffel system programming. Lua system programming. I've found books for prolog, but they all start off with logic programming. It's

Real programming in Prolog. Eiffel system programming. Lua system programming. I've found books for prolog, but they all start off with logic programming. It's kind of weird, or is it just me? And the other 2 I've not really seen any decent books for them. Unless I'm wrong? (A subtle cry for help.)