str_utils/
is_lowercased.rs

1/// To extend `str` to have `is_lowercased` method.
2pub trait IsLowercased {
3    /// Returns `true` if all characters in the string are not uppercase according to Unicode.
4    fn is_lowercased(&self) -> bool;
5}
6
7impl IsLowercased for str {
8    #[inline]
9    fn is_lowercased(&self) -> bool {
10        self.chars().all(|c| !c.is_uppercase())
11    }
12}