Package bitset provides bitset implementations for bit packing binary values into pointers and bytes. A bitset, while logically equivalent to a []bool, is often preferable over a []bool due to the space and time efficiency of bit packing binary values. They are typically more space efficient than a []bool since (although implementation specifc) bools are typically byte size. Using a bitset in place of a []bool can therefore result in at least an 8x reduction in memory usage. While bitsets introduce bitshifting overhead for gets and sets unnecessary for a []bool, they may still more performant than a []bool due to the smaller data structure being more cache friendly. This package contains three bitset implementations: Pointers for efficiency, Bytes for situations where bitsets must be serialized or deserialized, and Sparse for when memory efficiency is the most important factor when working with sparse datasets.