[MaxBarraclough]

Jonathan Blow's own unreleased Jai programming language has a feature to make it trivial to switch between array-of-structs and struct-of-arrays.

From a quick search, it seems HackerNews's own jcelerier has put together a C++ library for doing this. https://github.com/celtera/ahsohtoa

[wild_egg]

Zig also makes this trivial

[throwaway2037]

I believe you. Can you provide a simple example? I would be helpful for me to understand.