One thing I find handy is to format my debug printing for my vector and matrix types in Octave syntax. It makes it easier to debug my C++ code when I can copy/paste values directly into Octave for further analysis. e.g.

    vec3f x = {1,2,3};
    fmt::print("x = {}\n", x);
    // output:
    // x = [1; 2; 3]