https://mattbolitho.github.io/tags/constexpr/Recent content in Constexpr on Matt BolithoHugo -- gohugo.ioen-GBMatt BolithoSat, 07 Oct 2023 07:00:00 +0000https://mattbolitho.github.io/posts/compile-time-hashing-in-c++/Sat, 07 Oct 2023 07:00:00 +0000https://mattbolitho.github.io/posts/compile-time-hashing-in-c++/This post is an amalgamation of a couple of previous posts that have been deleted and merged together for cleanliness and conciseness. Hashing C++ types as compile time identifiers (2023-08-09) Improving constexpr hashing and iteration (2023-08-31) A few months ago, I started looking into compile time hashing in C++. The main reason for this, was wanting a way to identify components in a system at based on their types. This is a pattern that had been used in a previous role, and I found the code that we ended up with being very easy to read and understand.https://mattbolitho.github.io/posts/efficient-configurable-lambdas-with-constexpr-and-optional/Fri, 18 Aug 2023 18:00:00 +0000https://mattbolitho.github.io/posts/efficient-configurable-lambdas-with-constexpr-and-optional/Introduction I was hacking around with a personal project and bumped into a cool thing with constexpr, std::optional, and lambdas. Maybe it’s a well known interaction, but I thought I’d write a post either way! The project in question was a library which contains an algorithm that can be parameterised by the user through options. These options are just struct instances which are pretty trivial, plain old data, and compile-time constructable.