C/C++ users: how do you use it for in ML applications? Exploratory analysis? Converting research to production code? Do you use existing libraries, or do application specifics (or other reasons) require that you write your own?
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.
