GRDB 6 missing DatabasePool/DatabaseQueue interchangeability about grdb.swift HOT 4 OPEN

Thank you @freak4pc for reporting this issue.

It looks that some auditing should be done indeed. Those are APIs I rarely use myself in this way, so I did not notice the problem.

I'll make an exhaustive list of methods that accept a generic DatabaseWriter or Reader.

I don't quite get why SE-0352 does not apply, though.

In the linked proposal text, search for "In the existing language, one could implement a shim..." The described technique will give you the needed workaround until GRDB7 can do what is needed so that no one faces the same issue as you do.

from grdb.swift.

This section even more explicitly states you should be able to move from any to some and back, any chance this could be a bug?

https://github.com/apple/swift-evolution/blob/main/proposals/0352-implicit-open-existentials.md#moving-between-any-and-some

from grdb.swift.

This section even more explicitly states you should be able to move from any to some and back, any chance this could be a bug?

https://github.com/apple/swift-evolution/blob/main/proposals/0352-implicit-open-existentials.md#moving-between-any-and-some

I'll open a Github issue in the Swift repo if something does not behave as described by the proposal, yes. I'll need a closer look. Meanwhile, we just need GRDB users to be able to use any DatabaseWriter freely, since this is how we can use a pool in the app, and a queue in tests and previews. That's what's important.

(I'm late in my answer because I was in vacations 😎)

from grdb.swift.