I use those functions a lot and I'm still impressed by how fast they are ran by current JS interpreters (especially V8). I did a layer over strings/arrays/obj

I use those functions a lot and I'm still impressed by how fast they are ran by current JS interpreters (especially V8). I did a layer over strings/arrays/objects to get nearly the same behavior everywhere. An example of those functions (in my custom programming language) https://p.sicp.me/h4MJE.js https://p.sicp.me/h4MJE.js and the compiled code https://p.sicp.me/ctr6M.js https://p.sicp.me/ctr6M.js.