I’m by no means an expert on this topic, but what about using predefined hash map of value to function call/closure unless that also yields branched programming

I’m by no means an expert on this topic, but what about using predefined hash map of value to function call/closure unless that also yields branched programming underneath? Additionally, maybe you want to use macros of some kind to generate the “magic” function you’re looking for, where it constructs a single branchless statement up to N terms, whether it’s procedural macros in Rust or C macros.