Xcode swift failed with exit code 254

Question

I am getting this compiler error in my code and I can\'t figure out why:

:0: error: unable to execute command: Segmentation fault: 11


        

Answer 1

I am getting this same error when I try to extend NSArray to have a foreach method:

extension NSArray {

    func foreach(f: (AnyObject -> ())) {
        for elem in self {
            f(elem)
        }
    }
}

It would appear that extending NSArray with func that takes a function argument will cause the same problems. I worked around the issue by defining a forEachInArray function that takes the NSArray as an argument:

func forEachInArray(array: NSArray, f: (AnyObject -> ())) {
    for elem in array {
        f(elem)
    }
}