I'm aware of hot code reloading for interpreted languages, google just gives links to web page loading. I'm also aware of it at the OS level. I don't really understand why you'd want this in a compiled language.
Shared-library-based plugins, kernel modules, ...
Why not?
I think you may be misinterpreting my original question. It was asked out of ignorance, it wasn't a challenge. I was hypothesising some kind of self modifying code, or realtime adaptive optimising or something. I was attempting to show you my current level of knowledge so you could ELI7 instead of 5 :)
Forth, and I've even come across an ASM REPL.
Theres exceptions the other way, Awk is interpreted but doesn't as far as I'm aware have a REPL, Sed doesn't either. But then both of those have varying implementations, so there could be exceptions to the exceptions.
In fact, "compiled" programs on many platforms require an interpreter to set them up by dynamic code loading (including modifications if needed).
In ELF header, it's called "program interpreter", which gives a path to a program that understands this particular file and can assembly a running image in memory
Wish I could help you with this, but I have been out of the loop with Nim recently.
> I don't really understand why you'd want this in a compiled language.
Quick iteration in development. Not needing to manually recompile every time you make a small change.