I was a toy truck kid

If you study Latin you can automatically read a decent amount of those languages

Amazing

I am thinking now that unwind-protect is probably better for this in most cases, unless you can be absolutely sure nothing will go wrong in the first expression.

Can you recommend any resources for learning this? I am not finding it very intuitive based on the examples in cl-gtk4 repo.

Yeah, I tried doing memoization in Elixir for a math challenge, and it was like 15x slower than Lisp since you have to pass a message to the cache actor instead of just using a mutable memo table.

Plus I am dubious of pure FP. There are enough cases where banning mutation makes things slow.

Elixir has many small things like this that make it less appealing than CL. I want to make myself like it, but I can't force myself to switch from CL if I don't absolutely need that concurrency.