Method insert

code/chapter09/cuckoofilter/src/bucket.rs:41–50

(&mut self, fp: FingerPrint)

    }

    fn insert(&mut self, fp: FingerPrint) -> bool {
        for bfp in &mut self.buffer {
            if bfp.is_empty() {
                *bfp = fp;
                return true;
            }
        }

        false
    }

    fn delete(&mut self, fp: FingerPrint) -> bool {
        match self.get_fp_index(fp) {