Sorry for going off topic, but something fun I've learned lately is that in Nim (which compiles to C) changing: let x = foo() ... to ... const x = foo() ...

Sorry for going off topic, but something fun I've learned lately is that in Nim (which compiles to C) changing: let x = foo() ... to ... const x = foo() ...runs foo at compile time to get the value. I dunno I just thought it was neat.