swift - Convert dictionary containing `Any?` to `AnyObject`? -

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i'm looking straightforward way of converting dictionary of type [string : any?] dictionary of [string: anyobject]. loop through elements individually, seems 'wrong' me.

if try cast original dictionary, crash.

let dict:[string : any?] = ["something" : "else"]  // crashes fatal error: 'can't unsafebitcast  // between types of different sizes' let newdict = dict as? [string: anyobject]

looping correct, , swift encourages this. efficient , swift-like (*) approach is:

var result = [string: anyobject]() (key, value) in dict {     if let v = value as? anyobject {         result[key] = v     } }

(*) isn't "swift-like" because includes anyobject, should never part of non-temporary data structure. proper swift implementation convert anyobject real type.

note crash not appropriate , should open radar (bugreport.apple.com). as? should never crash this. should either nil or compiler failure.


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