Mention Array.deep has been removed

[Philippus]

fixes #1400. I'm struggling with describing a good alternative though, but maybe that is not needed?

[julienrf]

Maybe an alternative would be .flatten.toSeq?

[SethTisue]

Maybe an alternative would be .flatten.toSeq?

no, .deep doesn't flatten

I no longer remember what the original reporter of #1400 was using deep for

I think this whole topic is so obscure, it's fine to just merge this as-is. at the time I opened #1400 (on behalf of a user), I probably wasn't aware how obscure deep is

[smarter]

I miss .deep too, there's a reimplementation in partest that I wish was part of the stdlib: https://github.com/scala/scala/blob/466990276fa361006a90a744616aac95321265a2/src/partest/scala/tools/partest/Util.scala#L65-L78

[SethTisue]

@smarter can you runtime.ScalaRunTime.stringOf it, or do you actually need to stop before going all the way to String?

[smarter]

I wasn't aware of that, that works too but afaik scala.runtime is considered an internal API and should not be relied on.

[SethTisue]

yeah. perhaps a PR putting them stuff somewhere in stdlib, without adding to the number of methods available on Array and other user-facing types (which is the main reason I was glad to see .deep go), would be accepted.