Ocaml (which will turn 21 this year). It really hits a sweet spot for me: - fast executables - fast compile times - very expressive - good standard library

Ocaml (which will turn 21 this year). It really hits a sweet spot for me: - fast executables - fast compile times - very expressive - good standard library in 'Core' - a REPL so you can easily play around with code you have just written - a type system that's really useful for catching bugs - imperative programming is relatively easy I find myself becoming more and more productive. I will have to see if writing a little server for JSON web API sitting behind nginx is feasible - currently using ruby for that.