What is Partial apply for closure#1 in Swift
问题 I am trying to make sense of this crash report but can not make sense, because the function "applySettings()" is not called from init() as is shown in the crash report. What is "partial apply for closure#1" in Swift? Here is the desired code for init() function. public override init() { super.init() discoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: [AVCaptureDevice.DeviceType.builtInWideAngleCamera, AVCaptureDevice.DeviceType.builtInDualCamera, AVCaptureDevice.DeviceType