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extension URLResponse { | |
/// Returns casted `HTTPURLResponse` | |
var http: HTTPURLResponse? { | |
return self as? HTTPURLResponse | |
} | |
} | |
extension HTTPURLResponse { | |
/// Returns `true` if `statusCode` is in range 200...299. | |
/// Otherwise `false`. |
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// taken 2018-03-19 from wikipedia. https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes | |
public enum Iso639_1: String { | |
case ab = "AB" | |
case aa = "AA" | |
case af = "AF" | |
case ak = "AK" | |
case sq = "SQ" | |
case am = "AM" | |
case ar = "AR" |
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extension UIViewController { | |
var previousViewController: UIViewController? { | |
guard let navigationController = navigationController else { return nil } | |
let count = navigationController.viewControllers.count | |
return count < 2 ? nil : navigationController.viewControllers[count - 2] | |
} | |
} |
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import os | |
def createFolder(directory): | |
try: | |
if not os.path.exists(directory): | |
os.makedirs(directory) | |
except OSError: | |
print ('Error: Creating directory. ' + directory) | |