stormychel

import os

def createFolder(directory):
    try:
        if not os.path.exists(directory):
            os.makedirs(directory)
    except OSError:
        print ('Error: Creating directory. ' +  directory)
        

stormychel

extension NSManagedObject {
    /// Print content of object to console.
    func printContent() {
        print("\nNSManagedObjectID: \(self.objectID) - key/value dump:")
        for key in self.entity.attributesByName.keys {
            print("\(key): \(self.value(forKey: key) ?? "nil")")
        }
        print("\n")
    }
}

stormychel

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]
    }
}

stormychel

extension AnyView {
    /// Return UIHostingController for a SwiftUI View.
    /// - Usage:  let vc = AnyView( YourSwiftUIViewHere() ).asUIHostingController()
    /// - Created by Michel Storms.
    /// - Returns: UIHostingController ready to use with UIKit.
    func asUIHostingController() -> UIHostingController<AnyView> {
        return UIHostingController(rootView: self)
    }
}

stormychel

/// Check whether active window is in fullscreen mode.
/// - Parameter processIdentifier: the pid given by "NSWorkspace.shared.frontmostApplication?.processIdentifier"
/// - Returns: true if fullscreen, false if windowed
func isFullScreen(processIdentifier: pid_t) -> Bool {
    if let winArray: CFArray = CGWindowListCopyWindowInfo(.excludeDesktopElements, kCGNullWindowID) {
        for i in 0..<CFArrayGetCount(winArray) {
            if let window: [String : Any] = unsafeBitCast(CFArrayGetValueAtIndex(winArray, i), to: CFDictionary.self) as? [String : Any] {
                if let pid = window["kCGWindowOwnerPID"] as? Int32 {
                    if pid == processIdentifier {
                        if let bounds: [String : Any] = window["kCGWindowBounds"] as? [String : Any], let boundsWidth = bounds["Width"] as? CGFloat, let boundsHeight = bounds["Height"] as? CGFloat {

stormychel

// 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"