Function put

publication/code/chapter10/cuckoofilter/src/lib.rs:112–119

(&mut self, fp: FingerPrint, i: usize)

    }

    fn put(&mut self, fp: FingerPrint, i: usize) -> bool {
        if self.buckets[i % self.len].insert(fp) {
            self.len += 1;
            true
        } else {
            false
        }
    }

    fn delete<T: ?Sized + Hash>(&mut self, elem: &T) -> bool {
        let FaI { fp, i1, i2 } = FaI::from_data::<_, H>(elem);