#![allow(dead_code, deprecated, unused_variables, unused_mut)]
fn main() {
    let s = "Löwe 老虎 Léopard";
    assert_eq!(s.find(char::is_whitespace), Some(5));
    assert_eq!(s.find(char::is_lowercase), Some(1));
    assert_eq!(s.find(| c : char | c.is_whitespace() || c.is_lowercase()), Some(1));
    assert_eq!(s.find(| c : char | (c < 'o') && (c > 'a')), Some(4));
}