feat(array): unanimous

[TylerR909]

I've been writing several checks of the form...

const thingsMatch = array.every((el, _, [first]) => el.path.to.property === first.path.to.property);

lately and I'd like it to just be built-in.

[zgavin]

nice 👍

[stephenh]

@zgavin kinda surprised you 👍 :-) I was going to soft -1 b/c I was thinking we'd stay within the real of "mainstream as-in methods that have shown up in other collection libraries", i.e. the Ruby & Scala collections being the "most ergonomic" in terms of helper methods. I.e. we've taken .nonEmpty from Scala, many from Ruby, so we'd continue that pattern.

I personally haven't seen a .unanimous method, either by that name or a different name (iirc), so was thinking this wouldn't meet the bar for inclusion.

But 🤷 you're thinking why not?

(Now I'm curious to check Scala to see if they have something like this...)

[zgavin]

@stephenh I think we've added some novel things things purely to suite our needs already, so I'm good with adding it. For approvals this is a pattern that's come up a couple times.

[stephenh]

+1 with the caveat I 8.5-out-of-10 prefer the name everyHasSame

[stephenh]

👍

[homebound-team-bot]

🎉 This PR is included in version 1.3.0 🎉

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