acknowledge-part-1.swift

let cocoaPodsDir = "Pods/"
let carthageDir = "Carthage/Checkouts/"
let options: NSDirectoryEnumerationOptions = [.SkipsPackageDescendants, .SkipsHiddenFiles]

let fileManager = NSFileManager.defaultManager()

guard
    let cocoaPodsDirURL = NSURL(string: cocoaPodsDir),
    let cocoaPodsEnumerator = fileManager.enumeratorAtURL(cocoaPodsDirURL, includingPropertiesForKeys: nil, options: options, errorHandler: nil)
else {
    print("Error: \(cocoaPodsDir) directory not found. Please run `rake`")
    return
}

guard
    let carthageDirURL = NSURL(string: carthageDir),
    let carthageEnumerator = fileManager.enumeratorAtURL(carthageDirURL, includingPropertiesForKeys: nil, options: options, errorHandler: nil)
else {
    print("Error: \(carthageDir) directory not found. Please run `rake`")
    return
}

guard
    let cocoaPodsURLs = cocoaPodsEnumerator.allObjects as? [NSURL],
    let carthageURLs = carthageEnumerator.allObjects as? [NSURL]
else {
    print("Unexpected error: Enumerator contained item that is not NSURL.")
    return
}

let allURLs = cocoaPodsURLs + carthageURLs