[tjl]

The C++ template system alone makes it very difficult. Plus, many people have a habit of writing a mess of interconnected classes that become very difficult to pull apart to understand what's happening.

During my Master's (and my Ph.D.) I was using a finite element approach developed by a former Ph.D. of my supervisor(s). So, I asked for the code. I got back a mess of C++ and it was dependent on a linear algebra C++ library that wasn't around in the same form. I spent some time trying to reason out what he was trying to do, gave up and wrote my own in Fortran in about as much time as I spent trying to understand his.