Top-notch video tutorials for Swift developers

In this episode we take a look at CGImageSource from the ImageIO framework. Using CGImageSource we can perform operations like resize without loading the entire image into memory. In addition, we can extract image metadata like f-stop, aperture, ISO, and camera/lens information.

In this episode, Ben continues exploring NSOperation-based architecture, this time writing operations that present UI for a login screen, load the Core Data stack, and operations that are composed of multiple lower-level operations.

Sam Soffes joins us again to talk about supporting Carthage for your own libraries. In the demo, you'll also see how to structure a project to include both Mac and iOS framework targets with a single Xcode project.

In this episode we welcome our first ever guest screencaster, Sam Soffes! Sam takes us through what it takes to get started with Carthage to manage dependencies. Sam compares Carthage's approach to CocoaPods and walks through how to bring in a 3rd party library into a project.

In this episode we discuss dependent NSOperations. Using dependencies you can queue up a bunch of jobs and they will be run in the correct order, having one provide the necessary state for the next one to run. In the example, we take the large Hubble image, scale it down to a more appropriate size, then apply a Core Image filter to it. Each operation is dependent on the one before it, yet they are all queued up at the same time.

In this episode we examine the asynchronous (a.k.a concurrent) type of NSOperation where we are doing things that involve callback blocks or delegates.

In this episode we take a look at the basics of NSOperation, NSOperationQueue, starting from block operations and moving to custom NSOperation subclasses. We'll also see why it's important to make your operations thread safe.

In this episode we cover local notifications in iOS 8. We cover the difference between count-down style notifications and time-zone based notifications. We also discuss how to add actions to the notifications and handle those in your application.

In this episode we take the Magic Move transition from last week's episode and make interactive, so that you can feel the transition along with your swipe.

In this episode we'll create a custom view controller animation that mimics the Magic Move behavior from keynote, taking one object and animating into its place on the next slide (or view controller).

In this episode we examine how we can leverage the NSDateComponents class to convert a set of individual date parts like month, day, year into an actual NSDate

In this episode we talk about a Swift testing framework called Quick. Quick offers a familiar BDD style syntax, some really friendly matchers, as well as support for testing asynchronous parts of our code. We'll use a Ninja class as our example, testing initialization, equality, and an asynchronous method.

In this episode we wrap up our long Road Trip DJ Series. We resume testing on the device, uncovering and fixing an auto-layout issue, working with the music players events to keep our UI in sync, implementing a song progress indicator and implementing scrubbing. Phew!

In this episode we fix up the scrollbar, handle taps and update the active track, as well as adding a background color to the active row.

In this episode I do some deep auto-layout constraint debugging with Reveal, and discuss how to make our header resize based on the device we're running on.

In this episode I address the usability concerns of our toolbar buttons. I removed the bar button item spacing elements and instead use auto layout to control the size of the buttons. We also add a visual indicator of how wide each button is when you tap it, and fix the play/pause state of the middle button.

In this episode we adapt MPMediaItem to our PlaylistItem protocol and fix some issues related to running on the device. We add play/pause functionality, and discuss the issue of hit area on our toolbar buttons.

In this episode I fix a couple of bugs and fix the transition animation for the header view by leveraging UIView snapshotting.

In this episode we fix the playlist header at the top, first by a custom collection view layout, then by simply using a custom view at the top.

In this episode we wire up the next / previous track buttons and modify which track is currently shown in the header. We also encounter an unexpected issue when comparing signed and unsigned integers.

In this episode we make a custom collection view header to prominently display the currently playing track. We also fix up some auto layout issues from the last episode.

This time we work on the collection view layout and cells, along the way we create an abstraction of our media items to make development go a bit faster and to allow the app to display content in the simulator.

In this episode I put some custom icons in the player bar and convert this into a control that can be displayed in interface builder, complete with configurable spacing between buttons using Interface Builder.

Continuing our build out of Road Trip DJ, this time I focus on the music player, and keeping the play/pause button in sync on UIToolbar, which proves to be more difficult than it should be.