The last in a series of blog posts on a C++ technique that I've put to use for a numerical library. Was a fun little exercise, sharing here.

Update to the open source jekyll-responsive-magick plugin for generating responsive images for a Jekyll 4 website using ImageMagick.

The spaceship operator took me longer than it should (my mistake). A note to my future self, and maybe of use to you.

The intersection of forwarding references and overload resolution has been bugging me, and I've been caught out a few times on the wrong overload, so here's an idea.

C++ trick I pulled today. Like an explicit constructor but context dependent. Any alternatives from folks who've needed to do similar? One thing I still need to dig into a little deeper is how copy elision behaves here.

This one was quite a struggle, thought I'd share for the C++ programmers here.

I have a use case where for many function templates I have to instantiate them for a bunch of different parameter types, e.g. unary, binary and ternary functions where each argument can be one of 9 different types, giving 9, 9^2 = 81 or 9^3 = 729 instantiations of each function. Clearly I don't want to write those out as explicit template instantiations, and using macros is error prone too.

I've found this approach with std::variant and std::visit to be useful. Would appreciate any insight on edge cases where this may not work, or other suggested approaches.