attempt.swift

public func attempt<T>(source source: String = __FUNCTION__, file: String = __FILE__, line: Int = __LINE__, closure: () throws -> T) -> Optional<T>{
  do {
    return try closure()
  } catch {
    let fileName = (file as NSString).lastPathComponent
    let report = "Error \(fileName):\(source):\(line):\n    \(error)"
    print(report)
    return nil
  }
}