Jim Jim - 7 months ago 16
Swift Question

$T4 does not have a member named Generator ERROR swift

@IBAction func button(sender : AnyObject) {
var videoConnection : AVCaptureConnection!
videoConnection = nil
var connection : AVCaptureConnection
var port : AVCaptureInputPort
var stillImageOutput : AVCaptureStillImageOutput?

for connection in stillImageOutput?.connections{ //this line is where the error is

}


}

I am trying to take a picture with my custom camera and I am getting this error

Answer

stillImageOutput is an optional - even if you are using optional chaining, it cannot be used in a for loop, because if stillImageOutput is nil, the statement would be:

for connection in nil {
}

which wouldn't make sense.

To fix it, you have to use optional binding:

if let connections = x?.connections {
    for connection in connections {

    }
}
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