Loop in Rust

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

:timing
:sccache 1

loop¶

let mut count = 0;
loop {
    println!("{}", count);
    count += 1;
    if count >= 5 {
        break;
    }
}

()

let mut count = 0;
while count < 5 {
    println!("{}", count);
    count += 1;
}

()

let mut count = 0;
while true {
    println!("{}", count);
    count += 1;
    if count >= 5 {
        break;
    }
}

()

for word in "how are you".split_whitespace() {
    println!("{}", word);
}

how
are
you

()

for i in 1..5 {
    println!("{}", i);
}

()

fn print_type_of<T>(_: &T) {
    println!("{}", std::any::type_name::<T>())
}

let names: Vec<&str> = vec!["Pascal", "Elvira", "Dominic", "Christoph"];

for name in names {
    println!("{}", name);
}

Pascal
Elvira
Dominic
Christoph

()

let names = vec!["Pascal", "Elvira", "Dominic", "Christoph"];

for name in &names {
    println!("{}", name);
    print_type_of(name);
}

Pascal
&str
Elvira
&str
Dominic
&str
Christoph
&str

()