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I also maintain a collection of list resources. I have daily and weekly views as well, as the ability to search:

My server is written in Go and runs on AppEngine. I like both Swift and Go. It's more convenient to work with one language but Swift probably needs a couple more years to bake on Linux. Go is fast enough that my AppEngine server never has performance issues. I highly recommend it.

Good catch, I added it to the list

Optionals aren't a “functional concept”, whatever that means. They're just another data type, like tuples, lists, trees, etc.

Actually they are a special type of Monad which is a functional programming concept (see Haskell).

Yes, and lists [not necessarily linked lists] could have a Monad instance too. Does this make lists a “functional concept”?

It should be implied by generics. But it looks like Swift has some special sugar for it, neat.