Method hashCode

Fleece/Support/StringTable.hh:37–39

        enum class hash_t : uint32_t { Empty = 0 };

        static inline hash_t hashCode(key_t key) FLPURE {
            return hash_t( std::max(key.hash(), 1u) ); // hashCode must never be zero
        }

        size_t count() const FLPURE                            {return _count;}
        size_t tableSize() const FLPURE                        {return _size;}