Value of type '[AVCaptureDevice]' has no member 'compactMap'

[nirav-kotecha]

let cameras = session.devices.compactMap { $0 } - error on this line

[Jane930525]

Updated to Swift 4.1, error is gone but getting cameras as anempty array.

[vermotr]

Try to replace:

let session = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInDualCamera], mediaType: AVMediaType.video, position: .unspecified)

By:

let session = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInWideAngleCamera], mediaType: AVMediaType.video, position: .unspecified)

[sri1sri]

Still getting the same error...

[sri1sri]

Could someone one please help... THANKYOU in advance..

[raza08]

Try to use something like this. let cameras = (sessions.devices.flatMap { $0 })

[erkandiken]

@sri1sri generic instance method compactMap seems to be supported from iOS 7.0+ and compatible with Xcode 9.3+ . What is the SDK version you are targeting and Xcode version you are using ?

[GodsEye-07]

Still getting the same error...

1. Use as? [AVCaptureDevice] at the end of .compact { $0 }

2. ` let session = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInWideAngleCamera], mediaType: AVMediaType.video, position: .unspecified)

        let cameras = session.devices.compactMap { $0 }
        guard !cameras.isEmpty else { throw CameraControllerError.noCamerasAvailable }`