Skeets | Fetch , cache , and display images via HTTP in Swift | Caching library

When you have fewer than thirty bool fields you can implement a perfect hashing scheme by treating each bool as a single bit in the value of hash code. By "perfect" I mean that hash equality would be equivalent to actual equality (as opposed to "ordinary" hashing schemes, in which actual equality implies hash equality, but not vice versa).

The code would look like this: