Method map_utf8

crates/wtf8/src/lib.rs:919–927

(&'a self, f: impl Fn(&'a str) -> I)

    }

    pub fn map_utf8<'a, I>(&'a self, f: impl Fn(&'a str) -> I) -> impl Iterator<Item = CodePoint>
    where
        I: Iterator<Item = char>,
    {
        self.chunks().flat_map(move |chunk| match chunk {
            Wtf8Chunk::Utf8(s) => Either::Left(f(s).map_into()),
            Wtf8Chunk::Surrogate(c) => Either::Right(core::iter::once(c)),
        })
    }

    #[inline]
    fn next_surrogate(&self, mut pos: usize) -> Option<(usize, u16)> {