Filter array of dictionaries - SWIFT -

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i have following array:

[[user1id: nsdate], [user2id: nsdate], [user3id: nsdate]]

can filtered out dictionary user2id?

let test = [["user1id": nsdate()], ["user2id": nsdate()], ["user3id": nsdate()]] let newarray = test.filter { $0.keys.contains("user2id") }.flatmap { $0 }  print(newarray) // ["user2id": 2016-01-28 10:52:29 +0000]

i've edited dictionary bit testing purposes.

answer comment:

if want know if array contains dictionary "user2id" key can following:

test.contains { $0.keys.contains("user2id") } ? print("yep!") : print("nope!") // "yep!"

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