Top-notch video tutorials for Swift developers

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Bite-sized videos on iOS development.

The iOS landscape is large and changes often. With short, bite-sized videos released on a steady schedule, NSScreencast helps keep you continually up to date.

Up to date with Xcode 15 and iOS 17

We cover the latest and greatest to get you up to speed quickly.

UIKit, SwiftUI, SwiftData, and macOS

In our catalog you'll find a wide variety of topics and UI frameworks.

Swift Language

Increase your knowledge of the Swift language and take advantage of new Swift language features as they are developed.

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We don't want to waste your time. Most videos are between 10 and 20 minutes long.

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Steven Tolton

Have I mentioned lately how awesome NSScreencast is? No? Worth the subscription. Check it out if you’re an iOS developer. Or even if you’re not and you want an example of how to do coding screencasts well.

Foster Bass

Got tired of dead-end googling so I checked to see if @NSScreencast had covered what I was looking for. Of course he had, 4 years ago. Should have checked there first.

Aijaz Ansari

One 13-minute episode of @NSScreencast just paid for the yearly subscription fee in amount of time saved. Do it.

Sam Soffes

Seriously great stuff even for seasoned developers. I’ve learned a good amount from Ben’s videos.

James Dempsey

You can really expand your development horizons in just a few minutes a week with NSScreencast.

Alexis Gallagher

Random PSA for iOS developers: @NSScreencast is a great resource, and worth every penny. It’s high quality, practical, and honest.

Nate Armstrong

Can’t say enough good things about @NSScreencast There is gold in the Road Trip DJ Series.

Karl Oscar Weber

I just reuppped my subscription to @NSScreencast. [An] indespensible resource if you’re into iOS or Mac Development.

Marcus Ziadé

Just finished @NSScreencast series on Modern CollectionViews. Strongly recommended. Programmatic UI, nicely structured code, easily approachable explanation style. 👌

Showing episodes 73 - 96 of 586 in total
  • Tasks, Groups, and Cancellation

    #514

    Async / Await

    The unit of work in Swift Concurrency is the Task. In this episode we will see how tasks are created and structured, how to run work in parallel, and how to handle cancellation by aborting work or returning partial results.

  • Actors

    #513

    Async / Await

    Actors are a new first class concept in swift. In this episode we will explore the problem they solve and how to use them to avoid race conditions which can lead to inconsistent results or even crashes.

  • Adapting Delegate Callbacks to Async Await

    #512

    Async / Await

    Continuations are great for adapting completion-handler APIs to the new async await world. But what about delegate callbacks, which happen in an entirely separate method? In this episode we will adapt 2 delegate APIs into async await to see how this works.

  • Adapting existing asynchronous APIs with Continuations

    #511

    Async / Await

    With Continuations we can bridge the non-async world and make it async. Continuations allow us to take the result of a completion block and turn it into an async flow. In this episode we will see the difference between checked and unchecked continuations as well as their throwing variants.

  • Async Networking

    #510

    Async / Await

    In this episode we will see how URLSession can be used with async await. With this new API you can easily send network request and await a tuple of both the data and the response object.

  • Concurrent For Loops with Task Groups

    #509

    Async / Await

    In this episode we will see how we can run tasks concurrently with concurrent for loops, which is useful when the number of items you want to process is dynamic. With Task Groups you can process results asynchronously and assemble the results in a safe way.

  • Async / Await Basics

    #508

    Async / Await

    In this episode we will show how the async await keyword can simplify asynchronous code, reading top-down as if it were synchronous, but without blocking any threads. We'll also see how async let can allow you to process multiple values concurrently.

  • CocoaPods Modules

    #507

    Modular Project Architecture

    If you're using CocoaPods already, then mixing with Swift Packages can prove to be infeasible. You can create your modules as internal pods as well, however there are a few gotchas. In this episode I will cover how to do this, how to link up local pods and create example projects for demo UI and running tests, as well as how to overcome some of the rough edges you might experience.

  • Module Resources and Dependencies

    #506

    Modular Project Architecture

    Now that we've seen how to setup a feature module, we'll also need to decide how best to share a feature's resources and deal with dependencies.

  • Creating Standalone Feature Modules

    #505

    Modular Project Architecture

    One big benefit of modularizing an application is working on features as modules. Let's re-create the welcome screen experience as a feature module using Swift Package Manager and Xcodegen.

  • Swift Package Modules

    #504

    Modular Project Architecture

    In this episode we create a modularized setup where our modules are Swift Packages and brought into the main app using Xcodegen and local path references to the packages.

  • Xcode Project Generation with Xcodegen

    #503

    Modular Project Architecture

    One thing that can be a pain when splitting modules up into separate projects is maintaining the Xcode projects themselves. Not to mention the fact that as team sizes grow, merging changes in project files gets exponentially more painful. In this episode we will look at using Xcodegen to have a repeatable project generation that you can use to create consistent Xcode projects without much fuss.

  • Isolating Dependencies

    #502

    Modular Project Architecture

    Breaking your code into discrete modules will surface a problem if your code is tightly interconnected. Once you've defined your module boundaries you now are forced to not cause bidirectional dependencies. In this episode we will look at some strategies for breaking apart dependencies into abstractions first using protocols, then using protocol witnesses. We can then depend on those abstractions in our isolated module projects.

  • Nested Xcode Projects

    #501

    Modular Project Architecture

    One way of achieving modularization is to build frameworks using nested Xcode projects. This has the benefit of having everything in one place and can easily build the entire thing. You can also zero-in on a single project and just work from there if you want. Each sub-project can have its own tests, sample application, etc.

  • Motivation for Modular Project Architecture

    #500

    Modular Project Architecture

    In this episode we will talk about the overview and motivation for a modular project architecture. Why split things up? I'll talk about the problems we face, what benefits we may achieve, and how can we approach the problem.

  • Localizing Pluralized Phrases

    #499

    Localizing Your App

    Pluralization rules vary by language, so it's not as easy as just adding an "s". To properly handle these cases, we need to use a Stringsdict file and format our string using a special syntax.

  • Localizing Images

    #498

    Localizing Your App

    Sometimes you may find that you want to localize images specific to a locale. In this episode we'll make up a contrived example where we want to change our splash image from a pizza to sushi if the locale if Japanese. We can easily do this with Asset Catalogs and provide a more tailored experience.

  • Importing Translated Strings

    #497

    Localizing Your App

    Once we have our translated files back from our translators, we can now import them for use in our project. I'll show how do do this within Xcode and from the command line.

  • Exporting Strings for Translation

    #496

    Localizing Your App

    In this episode I will show two ways you can export all of the strings in your project. The first is using Xcode, but since this is a process you'll likely want to repeat, we'll also show how to do it via the command line so you can automate it. We'll then take the xliff files and send them off for translation using a translation service.

  • Preparing your project for localization

    #495

    Localizing Your App

    There's a bit of prep work we need to do to get our project ready to be localized. We'll start by defining which languages we want to support, localize any interface-based files like Storyboards, and then move on to localizing strings in code.

  • Localizing Dates and Times

    #494

    Localizing Your App

    Using DateFormatter we can format dates and times to whatever format we choose. However, in most cases we should rely instead on the builtin styles instead, which are locale aware. This way we can present dates and times that are consistent with the user's preferences.

  • Locales, Numbers, and Lists

    #493

    Localizing Your App

    Let's quickly review how to work with the Locale object. Then we can use various locales in conjunction with NumberFormatter and ListFormatter to have localized output provided for us.

  • Localization 101

    #492

    Localizing Your App

    In this episode we will define what Localization is and why you should localize your apps.

  • Xcode 13 Vim Mode

    #491

    One of my favorite new features of Xcode 13 is support for Vim key bindings. In this episode we will see how to enable this and I'll give a quick tour of how to get around using Vim.