GM release of Xcode 6 compile

Question

I just downloaded the GM release of Xcode 6 and it won\'t compile with this error:

Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault         


        

Answer 1

If you are using some API which should be used in early iOS version, you may get build failure. For example: If you are using UI_USER_INTERFACE_IDIOM() instead of UIDevice.currentDevice().userInterfaceIdiom to identify the device type, you will get this build error with no hint.

Answer 2

change

func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell!  

TO

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell

and do the same to others like this

Answer 3

By following @maxvel's suggestion, I got to know that max() and min() functions failed to compile in the release mode. I replaced it with my own functions like below.

//Swift compiler seems to failing to compile default min and max functions in release 
//mode hence writing my own
//
func maximum<T: Comparable> (one: T, other: T) -> T {
    if one > other {
        return one
    }
    else {
        return other
    }
}

func minimum<T: Comparable> (one: T, other: T) -> T {
    if one < other {
        return one
    }
    else {
        return other
    }
}