would it be nice to add Default?

[BrianHicks]

I have a program that, simplified, that looks something like this:

let mut some_map: HashMap<String, HashSet<String>, Xxh3Builder> = HashMap::with_hasher(Xxh3Builder::new());

// ...

let entry = some_map.entry(some_string);
entry.or_default().insert(some_other_string);

I realized I could use HashSet<String, Xxh3Builder> in the values here, but the code fails to compile, since Xxh3Builder does not implement Default. Would that be desirable?

(Of course this is not too hard to fix in my code, but it'd also be nice to not have to!)

[DoumanAsh]

Hmm, I'm not sure I follow? I think HashMap has only with_hasher method to created map with custom hasher?

[DoumanAsh]

Well, in any case I added Default and published it as 0.8.6

[BrianHicks]

Thank you!

To clarify, I’m talking about the or_default call that creates the set, not the call that creates the dict. This will make life easier, though, so thanks!