onevcat

//: A UIKit based Playground for presenting user interface
  
import UIKit
import PlaygroundSupport

extension Notification {
    struct UserInfoKey<ValueType>: Hashable {
        let key: String
    }
    

lancy

//
//  YTKAnimatingRequestAccessory.h
//  Ape_uni
//
//  Created by Chenyu Lan on 10/30/14.
//  Copyright (c) 2014 Fenbi. All rights reserved.
//

#import <Foundation/Foundation.h>

nscoding

@interface NSCodingSearchBar : UISearchBar

// Default by the system is YES.
// https://github.com/nst/iOS-Runtime-Headers/blob/master/Frameworks/UIKit.framework/UISearchBar.h
@property (nonatomic, assign, setter = setHasCentredPlaceholder:) BOOL hasCentredPlaceholder;

@end

snikch

- (UIViewController *)topViewController{
  return [self topViewController:[UIApplication sharedApplication].keyWindow.rootViewController];
}

- (UIViewController *)topViewController:(UIViewController *)rootViewController
{
  if (rootViewController.presentedViewController == nil) {
    return rootViewController;
  }