> > Precomputing values without I/O is conceptually just an advanced kind of compiler optimization, and that’s why Rust is basically seeking to make const fns o

> > Precomputing values without I/O is conceptually just an advanced kind of compiler optimization, and that’s why Rust is basically seeking to make const fns only pure functions. I agree that generating an array at compile time is perfectly fine. I was saying that I/O should be restricted in compile-time computation, which the person I was responding to made me believe was entirely unrestricted in compile-time computation in D.