iOS Concurrency with GCD and Operations - Part 12: | Ray Wenderlich

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Review what you've learned in our video course iOS Concurrency with GCD & Operations, and get some hints and tips for handling concurrency in iOS.

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/3648-ios-concurrency-with-gcd-and-operations/lessons/12
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Links mentioned in this video:

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This course has substantially increased my confidence with GCD and Operations, and makes me more comfortable now with the official docs too - thank you Audrey.

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thank you!! I’m so glad you found it helpful :smile:

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You are a very good teacher. I like it that you have broken down the lessons in understandable chunks.

Too often in online courses, what is attempted to teach is buried inside a very complex program. I prefer small chunks building up to the more complex if increased complexity is included.

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Thank you Audrey and RW for making this course happen. It’s good to know somebody keeps the training ball rolling…

Apple still keeps their documentation in the Objective-C and their doc support for Swift 3 is not too swifty at all. (I’m one of those new guys who’ve learned iOS app dev in Swift only, and I’m really hoping to keep it that way if I can…)

Audrey, you are an admirable educator! You explain complex topics clearly, and to the point, and the code examples are awesome.

You made me a new RW subscriber! No regrets. :+1:

(Now how about a new tutorial on intermediate/advanced CloudKit and CoreData… which might include concurrency usage examples… ? Well it’s just an idea. :slight_smile:)

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thank you so much Mark! CloudKit and CoreData are also very essential topics, and I think you won’t be disappointed :wink:

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This theme for me was a big black box, but now it’s not … at least for now so black :wink:
I liked how this course was laid out: size of the steps and playgrounds combined with XCode project.

So, Big Thank You, Audrey and RW team! :slight_smile:

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thanks Ilmar! it was the same for me :wink: I learned so much while making this course!

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Grand Central Dispatch Tutorial for Swift 3: Parts 1 & 2 have been updated for Swift 3 by Christine Abernathy. Link is to Part 1.

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Fantastic tutorial series. Thank you so much Audrey. Very well done!!

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Fantastic series. Thanks Audrey!

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Thanks Audrey. Really enjoyed all the videos. You have explained it very well. Thank you for your good effort.

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@robmontesinos @johnisaac @remyagiri.r Really glad you like it guys! Cheers! :]

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Hey guys,

Could you update this tutorial in order to work with swift 5.2? most app examples don’t work with Xcode 11.x

Thanks!

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hi Roberto! I’m currently working on updating this course.

Scott Grosch’s book is up to date for Swift 5.1.

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Great tutorial @audrey, now I feel more comfortable thinking asynchronously :stuck_out_tongue:
Also, I noticed the first lecture talked about ‘locks’ but here only one approach was shown, ie using serial queues. (EDIT: Was talked of in Lec 11)
Also, I noticed a bool flag ‘semaphore’ being used to ensure thread safety, didn’t see how or its usage in this tutorial series, do consider introducing them in the revision of this course :smiley:

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hi akashlal! I think the move is away from low-level tools, mainly because they’re much harder to use safely. The update will include DispatchSemaphore, but only to control the number of concurrent threads in a dispatch group.

Thanks for working through this course so thoroughly!

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@che1404 @akashlal Please check out the updated version of the course when you get a chance:

https://www.raywenderlich.com/9461083-ios-concurrency-with-gcd-and-operations

I hope it helps!