Add in function

fn add(x: u32, y: u32) -> u32 {
    x + y
}

fn main() {
    println!("ok");
    let first = "19";
    let second = 23;
    println!("{}", add(first, second));
}

def add(x, y):
    return x + y

print("ok")
first = "19"
second = 23
print(add(first, second))

use feature 'say';

sub add {
    my ($x, $y) = @_;
    $x + $y
}

say "ok";
my $first = "19";
my $second = 23;
say add($first, $second);

Much less obvious if we are calling a function with parameters that are not the correct type.

The result is the same as in the previous example.