samsonjs

#import <Foundation/Foundation.h>

NSDictionary *TestD(void) {
    return @{
        @"string" : @"abc",
        @"number" : @42,
        @"dictionary" : @{
            @"string" : @"abcdef",
            @"array" : @[ @"a", @2 ]
        },

samsonjs

// Compile with clang -framework Foundation sethack.m

#import <Foundation/Foundation.h>
#import <objc/runtime.h>

/*
 CFHashBytes from http://www.opensource.apple.com/source/CF/CF-1153.18/CFUtilities.c
 */
#define ELF_STEP(B) T1 = (H << 4) + B; T2 = T1 & 0xF0000000; if (T2) T1 ^= (T2 >> 24); T1 &= (~T2); H = T1;

samsonjs

// Taken from the commercial iOS PDF framework http://pspdfkit.com.
// Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
// Licensed under MIT (http://opensource.org/licenses/MIT)
//
// You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it.

#import <UIKit/UIKit.h>
#import <objc/runtime.h>
#import <objc/message.h>

samsonjs

// Swift3 gets rid of dispatch_once and recommends replacing it with a lazy global.
// That's very straightforward when dispach_once is used to initialize something, but
// isn't an exact match when you want something to execute once, and then become a noop
// in a thread-safe way.

// The following approach seems completely "correct" and I guess actually a bit elegant,
// if by "elegant" you mean "terse and not immediately obvious to the reader, which makes
// you look very clever."

var doOnce: () -> Void = {

samsonjs

import Foundation

extension NSData {
    var md5: NSString {
        let digestLength = Int(CC_MD5_DIGEST_LENGTH)
        let md5Buffer = UnsafeMutablePointer<CUnsignedChar>.allocate(capacity: digestLength)

        CC_MD5(bytes, CC_LONG(length), md5Buffer)
        let output = NSMutableString(capacity: Int(CC_MD5_DIGEST_LENGTH * 2))
        for i in 0..<digestLength {

samsonjs

import Foundation
import UIKit
import UIKit.UIGestureRecognizerSubclass


/// A Gesture Recognizer that fires either on long press, or on "3D Touch"
final class MNTLongPressGestureRecognizer: UILongPressGestureRecognizer {

    // MARK: - Properties

samsonjs

import Foundation
import UIKit


/// Used to create a layout guide that pins to the top of the keyboard
final class KeyboardLayoutGuide {

    private let notificationCenter: NotificationCenter
    private let bottomConstraint: NSLayoutConstraint

samsonjs

//: Playground - noun: a place where people can play

import Foundation

final class Disposable {
    private let dispose: () -> ()
    init(_ dispose: @escaping () -> ()) {
        self.dispose = dispose
    }
    

samsonjs

/*
In iOS 11, interactive view controller transitions no longer scrub by setting the layer speed to zero
and changing the timeOffset. As a result of this change, implicit animations that occur in places like
-viewWillAppear: (called during an interactive transition) no longer end up “caught in” the animation.

To get the same behavior for table view row deselection as before, you can either use UITableViewController
which implements this for you, or you can implement it manually by deselecting the row in an alongside
animation for the transition (set up in -viewWillAppear: using the transition coordinator).

Here is an example implementation which correctly handles some of the more subtle corner cases:

samsonjs

//
//  ContentView.swift
//  Layout
//
//  Created by Matt Gallagher on 7/6/19.
//  Copyright © 2019 Matt Gallagher. All rights reserved.
//

import SwiftUI