VikingofRock posted:

To be fair, macros much better in Rust than they are in languages like C++. IMO Rust macros are sort of like C++ templates, in that they are often ugly internally but allow for seemingly magic functions that "just do" whatever a user wants them to do.


You could do something like

Rust code:

fn main() {
    use std::io::Write;
    std::io::stdout().write("Hello, world!".as_bytes()).unwrap();
}

if you wanted, but IMO the macro version is simpler, easier to understand, and more idiomatic, so it makes sense that they would put it in the "Hello, world!" example.