Hashability?

[adam-rocska]

Hashability?

Sure, it may seem like a big one, so if you agree that this ticket would be nice to have, I'll contribute.

Problem

Money's types, like CurrencyType can't be collected in Sets or used in sophisticated cases in general since protocols can't be fancily extended on the dependent's end.

Specifically this issue tries to raise awareness on the necessity of Hashability.

Solution

Make things Hashable that make sense. Like CurrencyType.