pub fn build_forward<'n, B: ?Sized + AsRef<[u8]>>(
        &self,
        needle: &'n B,
    ) -> Finder<'n> {
        self.build_forward_with_ranker(DefaultFrequencyRank, needle)
    }
Build a forward finder using the given needle from the current
settings.
src/memmem/mod.rs