smileyborg

// UICollectionView Objective-C example

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
        
    NSIndexPath *selectedIndexPath = [[self.collectionView indexPathsForSelectedItems] firstObject];
    if (selectedIndexPath != nil) {
        id<UIViewControllerTransitionCoordinator> coordinator = self.transitionCoordinator;
        if (coordinator != nil) {
            [coordinator animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> context) {

hongrich

App Store Review Guidelines
Introduction
Apps are changing the world, enriching people’s lives, and enabling developers like you to innovate like never before. As a result, the App Store has grown into an exciting and vibrant ecosystem for millions of developers and more than a billion users. Whether you are a first time developer or a large team of experienced programmers, we are excited that you are creating apps for the App Store and want to help you understand our guidelines so you can be confident your app will get through the review process quickly.

The guiding principle of the App Store is simple - we want to provide a safe experience for users to get apps and a great opportunity for all developers to be successful. We do this by offering a highly curated App Store where every app is reviewed by experts and an editorial team helps users discover new apps every day. For everything else there is always the open Internet. If the App Store model and guidelines are not best for your app or business idea th

gbarcena

let preferredTransform = originalVideoTrack.preferredTransform
let finalTransform: CGAffineTransform
// These if statements were added to handle time lapse videos which use abcd for transforms
// and not tx, ty
if preferredTransform.a == -1 && preferredTransform.d == -1 {
    transform = transform.scaledBy(x: -1, y: -1)
    finalTransform = transform.translatedBy(x: -outputVideoSize.width, y: -outputVideoSize.height)
} else if preferredTransform.b == 1 && preferredTransform.c == -1 {
    transform = transform.rotated(by: CGFloat.pi/2)
    finalTransform = transform.translatedBy(x: 0, y: -outputVideoSize.width)

mackuba

Following the tradition from last year, here's my complete list of all interesting features and updates I could find in Apple's OSes, SDKs and developer tools that were announced at this year's WWDC. This is based on the keynotes, the "What's New In ..." presentations and some others, Apple's release notes, and blog posts and tweets that I came across in the last few weeks.

If for some reason you haven't watched the talks yet, I really recommend watching at least the "State of the Union" and the "What's New In" intros for the platforms you're interested in. The unofficial WWDC Mac app is great way to download the videos and keep track of what you've already watched.

If you're interested, here are my WWDC 2015 notes (might be useful if you're planning to drop support for iOS 8 now and start using some iOS 9 APIs).

---

OSX → macOS 10.12 Sierra

ArtSabintsev

PAYLOAD="{\"username\": \"Xcode Bot\",
\"text\": \"${XCS_BOT_NAME} Status: ${XCS_INTEGRATION_RESULT}.\nErrors: ${XCS_ERROR_COUNT}\nWarnings: ${XCS_WARNING_COUNT}\nFailed Tests: ${XCS_TEST_FAILURE_COUNT}\nAnalyzer Issues: ${XCS_ANALYZER_WARNING_COUNT}\",\"icon_emoji\": \":robot_face:\"}"
echo $PAYLOAD
curl -X POST --data-urlencode "payload=${PAYLOAD}" https://hooks.slack.com/services/<slack_room_id>

zats

#!/usr/bin/env xcrun swift

// $ chmod +x script.swift
// $ ./script.swift
// or $ ./script.swift -xcode=/Applications/Xcode-beta.app

import Foundation

@noreturn private func failWithError(message: String) {
    print("🚫 \(message)")

steipete

static NSData *PSPDFCalculateSHA256FromFileURL(NSURL *fileURL, CC_LONG dataLength, NSError **error) {
    NSCParameterAssert(fileURL);

    dispatch_queue_t shaQueue = dispatch_queue_create("com.pspdfkit.sha256-queue", DISPATCH_QUEUE_SERIAL);
    __block dispatch_io_t readChannel;

    void (^processIntError)(int intError) = ^(int intError) {
        if (intError != 0) {
            PSPDFLogWarning(@"Stream error: %d", intError);
            if (error) *error = [NSError errorWithDomain:@"SHA256Error" code:100 userInfo:@{NSLocalizedDescriptionKey: @"failed to open file for calculating SHA256."}];

mackuba

Here's my own list of the interesting stuff announced during this year's WWDC, collected from the keynotes, various Apple docs, blog posts and tweets.

If you're planning to watch the videos, I really recommend this Mac app that helps you download and watch them: https://github.com/insidegui/WWDC.

OS X El Capitan

http://www.apple.com/osx/elcapitan-preview/

• split view - two apps side by side on full screen

blockerList.json

[
    {
        "action": {
            "type": "block"
        },
        "trigger": {
            "url-filter": ".*",
            "resource-type": ["script"],
            "load-type": ["third-party"],
            "if-domain": ["imore.com"]

nicklockwood

Thoughts on Swift 2 Errors

When Swift was first announced, I was gratified to see that one of the (few) philosophies that it shared with Objective-C was that exceptions should not be used for control flow, only for highlighting fatal programming errors at development time.

So it came as a surprise to me when Swift 2 brought (What appeared to be) traditional exception handling to the language.

Similarly surprised were the functional Swift programmers, who had put their faith in the Haskell-style approach to error handling, where every function returns an enum (or monad, if you like) containing either a valid result or an error. This seemed like a natural fit for Swift, so why did Apple instead opt for a solution originally designed for clumsy imperative languages?

I'm going to cover three things in this post: