[jhartmann]

I use a tiny bit of python, a little more LUA, and a TON of C++ in the machine learning work I do. Things like opencv, fbthrift, folly, boost, fblualib, and thpp make writing this sort of code in C++ very time efficient and if you know what you are doing it will end up performing much better than the alternatives. I only use python for some light scripting, data collating and reformatting type tasks, and LUA due to using Torch as my Neural network framework of choice.