Although I've tried to simplify things as much as possible, GCD still isn't easy. That said, it's much easier than the alternatives: GCD automatically handles thread creation and management, automatically balances based on available system resources, and automatically factors in Quality of Service to ensure your code runs as efficiently as possible. The alternative is doing all that yourself!
There's a lot more we could cover (not least how to create your own queues!) but really you have more than enough to be going on with, and certainly more than enough to complete the rest of this series. We'll be using GCD again, so it might help to keep this reference close to hand!
You finished another project, and I'm glad Hacking with Swift helped you. Now I need your help. Please take just a moment out of your day to tell others about Hacking with Swift so they can benefit too.
You can click below to post a tweet straight to this project. Or if you're feeling particularly generous, you can click here to link to Hacking with Swift on your website and help spread the word.
Thank you. Your support is what keeps me going!
Paul Hudson is the creator of Hacking with Swift, the most comprehensive series of Swift books in the world. He's also the editor of Swift Developer News, the maintainer of the Swift Knowledge Base, and Mario Kart world champion. OK, so that last part isn't true. If you're curious you can learn more here.
Learn Swift faster!
Take your Swift learning to the next level: buy the Hacking with Swift e-book and get bonus material to help you learn faster!