//@ For example, consider `sqr`:
fn sqr(i: i32) -> i32 { i * i }
//@ Between the curly braces, we are giving the *expression* that computes the return value.
//@ For example, consider `sqr`:
fn sqr(i: i32) -> i32 { i * i }
//@ Between the curly braces, we are giving the *expression* that computes the return value.