Hello @philmitchell, I'm glad to hear about you :) Please give me a couple of days before I can review the pull request.

Welcome to the GRDB contributors, @philmitchell! 🙂

I added a few commits, and we're going to be able to merge.

c6781f4 replaces arrays like [String] with generic collections some Collection<String>. It helps users feed the methods with whatever they have at hand: an Array, but also a subsequence, etc. This is also how Row.coalesce can support lazy collections, as expected (there's no need to iterate the whole collection when we can stop on the first non-null value).

761b00f and a17d72e test and fix the original code so that we can coalesce collections with less than 2 elements. Since we provide apis that accept a collection of values, we must wonder if it works with 0, 1, 2, etc.

⛵ Shipped in 7.0.0-beta.3

Thanks, @groue, it's really a privilege! Sorry about all the cleanup you had to do, I will never be offended if you reject a PR w/ suggestions :)

Hopefully we will figure out something around GRDB 7 and SQLCipher so that I can actually use this!

You're very welcome, because coalesce addresses a real need! 😄 I was looking forward to merge, so I made a few changes on the go.

Hopefully we will figure out something around GRDB 7 and SQLCipher so that I can actually use this!

Yes, that's a big topic. Last year's development efforts have been absorbed by Swift Concurrency. I hope the path is now cleared for new improvements, such as restoring SQLCipher support in a way or another.