Comment by afavour

Yes, in my experience the Apple bias exists in all the articles and how-tos you read in a way that can trip you up.

It’s been years now but I wanted to create a Set with weak memory in its keys. Everything I read said “oh just use NSHashTable” and I dutifully did (it’s in Foundation) and then when I tried to cross compile it didn’t exist outside of Apple platforms. It’s not as if the import made it clear I wouldn’t be able to use it, but I couldn’t.