Every day is pretty much a mix of Dylan (http://opendylan.org/ http://opendylan.org/), some Python, some JavaScript and either C or C++. Occasionally shell scri

Every day is pretty much a mix of Dylan (http://opendylan.org/ http://opendylan.org/), some Python, some JavaScript and either C or C++. Occasionally shell scripts. My productivity in any of them is usually pretty decent, but it depends more on what I'm doing. In Dylan, I'm often hacking on the compiler or the runtime, so that's harder and slower going than doing some web services in Python, or Javascript for some visualization / UI. C++ varies from fairly easy work to modifying the standard C++ library to add instrumentation hooks, so again, the productivity varies.