I use the best tool for the job. If it is a quick scripting kind of thing, python. An API, i'll probably use Ruby which has a gem for everything. If there's

I use the best tool for the job. If it is a quick scripting kind of thing, python. An API, i'll probably use Ruby which has a gem for everything. If there's a lot of complicated rules where I might refactor a bit, i'll use a strongly typed language like C#. If its a data thing, keep it in sql. If its a stats thing maybe R. If it's a hardware kind of thing, C++. I don't really care about what's hot or trendy, I just want to accomplish the goal, and i'll use the tool that gets me there fastest.