douglashill

import UIKit

class FourColumnsContainerViewController: UIViewController {
    let outerSplitViewController = UISplitViewController(style: .tripleColumn)
    let innerSplitViewController = UISplitViewController(style: .doubleColumn)

    let primary = makeContentViewController("App")
    let secondary = makeContentViewController("Files")
    let mainContent = makeContentViewController("File Content")
    let inspector = makeContentViewController("Inspector")

laurilehmijoki

import RxSwift // Version 3.2.0
import RxCocoa // Version 3.2.0

func keyboardHeight() -> Observable<CGFloat> {
    return Observable
            .from([
                    NotificationCenter.default.rx.notification(NSNotification.Name.UIKeyboardWillShow)
                            .map { notification -> CGFloat in
                                (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue.height ?? 0
                            },

matsuda

///
/// https://stackoverflow.com/a/29741007
///
let s = Struct() // Struct
withUnsafePointer(to: s) {
    print(String(format: "%p", $0)
}

///
/// http://stackoverflow.com/a/36539213/226791