ios - Swift 2.0: Type of Expression is ambiguous without more context?

Question

The following used to work in Swift 1.2:

var recordSettings = [
    AVFormatIDKey: kAudioFormatMPEG4AAC,
    AVEncoderAudioQualityKey : AVAudioQuality.Max.rawValue,
    AVEncoderBitRateKey : 320000,
    AVNumberOfChannelsKey: 2,
    AVSampleRateKey : 44100.0]

Now, it gives the error:

"Type expression is ambiguous without more context".

question from:https://stackoverflow.com/questions/32663364/swift-2-0-type-of-expression-is-ambiguous-without-more-context

Answer 1

You could give the compiler more information:

let recordSettings : [String : Any] =
[
    AVFormatIDKey: kAudioFormatMPEG4AAC,
    AVEncoderAudioQualityKey : AVAudioQuality.Max.rawValue,
    AVEncoderBitRateKey : 320000,
    AVNumberOfChannelsKey: 2,
    AVSampleRateKey : 44100.0
]