Python, C, C++, some Lua, and a bit of Perl and Tcl. I find that I'm most productive in Python or Lua. C and C++ slow me down quite a bit, partly due to the l

Python, C, C++, some Lua, and a bit of Perl and Tcl. I find that I'm most productive in Python or Lua. C and C++ slow me down quite a bit, partly due to the languages themselves and partly due to fighting with our internal build system (and the long build times associated with that). At my previous job I got to use Racket quite a bit, and I was about as productive there as I am in Python. I'm a proponent of using the most appropriate language(s) for a particular project, but sometimes the powers that be will demand something particular (around here, they usually want C++ or Perl). We've got a static analysis project slated to start next year, and I'm hoping to talk them into letting me use OCaml. We'll see...