How to "block" in an agnostic way?

[Jon_Harrop]

@bluddy

Hmm… That’s not very different from just using a plain Hashtbl though, right? I mean, sure, you can use an older version, but only if you’re careful…

The semantics are the same as Set or Map but the performance is different. So you only need to be careful if you want it to run quickly. You don’t need to be careful for safety reasons as you must with a hash table.