How to use Protocols in Swift | Advanced Learning #15

Рет қаралды 15,393

Күн бұрын

In this video we jump into the wild world of Protocols in Swift. We will learn how to create custom protocols and then walk through a few real-world implementations.
Apple's definition of a Protocol:
A protocol defines a blueprint of methods, properties, and other requirements that suit a particular task or piece of functionality. The protocol can then be adopted by a class, structure, or enumeration to provide an actual implementation of those requirements. Any type that satisfies the requirements of a protocol is said to conform to that protocol.
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Пікірлер: 56

@Pepe_the_raver 9 ай бұрын

Probably the best Procotols video available on KZfaq!

@KimbrellBrad 2 жыл бұрын

You are absolutely killing it with this advanced series Nick! Truly appreciate all of the time and effort that you have put into your channel. I have watched every plkaylist and every episode that you have posted. Thanks!

@SwiftfulThinking 2 жыл бұрын

That is an in incredible thing to hear. Thank you for the comment Brad! I could not be happier to hear that someone is actually watching them in order and learning. This keeps me going 😎

@bbulliard 2 жыл бұрын

Brad is so right. Nick is killing it with awesome well explained, easy to understand tutorials . A truly gifted teacher

@arkemal Жыл бұрын

That's how Polymorphism is done in Swift. Thanks for the tutorial, Nick! Very good as usual!

@Khalid-fm2nh 2 жыл бұрын

your playlist was by far the best SwiftUi teaching I have ever watched, you don't just explains the concept you even chose to do it by the best practice. I hope to see a video explaining how to work with CoreLocation Kit inside MVVM SwiftUI Architecture Thank You A lot

@SwiftfulThinking 2 жыл бұрын

I am going to add CoreLocation to my list. Maybe a mini-app project. Thanks for the suggestion!

@user-do2un1cd4e Жыл бұрын

Awesome explanation! It was very easy to understand all benefits of it when you had show the usage in Preview. This is a moment when View becomes truly abstractive! Thanks

@probe8668 2 жыл бұрын

this video is unique from other videos about protocol i ever watched on youtube. thanks man.

@lionsctn5053 2 жыл бұрын

I love of these videos! Again they are all and I mean all of them very helpful when learning them for the first time and referencing them later on if I forget how to do something. Thank you very much for all your time and effort!

@SwiftfulThinking 2 жыл бұрын

Comments like this are why I've continued posting to this channel. Thank you!!

@asigivati1382 2 ай бұрын

Great video! instead of creating an empty protocol in order to combine 2 other protocols, you can do it via typealias like so: typealias CombinationProtocol = ButtonTextProtocol & ButtonPressedProtocol and create a variable that conform to it: var someVar: CombinationProtocol

@andayismayilzade1897 2 жыл бұрын

As always GREAT explanation. THANK YOU NICK!

@SwiftfulThinking 2 жыл бұрын

As always... thanks for watching Anday!

@williamallen4607 2 жыл бұрын

Best explanation of protocols I have seen. Thanks, Nick!

@SwiftfulThinking 2 жыл бұрын

Hey William! It's been a while! Thanks for the comment :)

@user-ic8sm9pw4r Ай бұрын

Super solid. Subscribed!

@magedmohmed4403 9 ай бұрын

Thank you Nick , your explanation is very very useful for us

@indarsnab 5 ай бұрын

Amazing, thanks!

@cruiseqe2 2 жыл бұрын

That was a very clear introduction to an otherwise perplexing subject. Thanks.

@SwiftfulThinking 2 жыл бұрын

Hey Mark! Glad to see you're watching these! Thanks for the comment 👍

@BSharing09 Жыл бұрын

Best explanation. Thanks a lot.

@minimaster.10 8 ай бұрын

keep updating SwiftUI Advance Learning! you are good sensei

@ericweideman6626 2 жыл бұрын

Really solid, clear explanation!

@SwiftfulThinking 2 жыл бұрын

Thanks for watching Eric 😎

@thahiraf1317 2 жыл бұрын

Thank you so much....You are amazing teacher

@SwiftfulThinking 2 жыл бұрын

Thanks Thahi!

@jameskayten6563 10 ай бұрын

Man . . . You're really good!

@SwiftfulThinking 10 ай бұрын

Thanks James!! I’ve been following you’re comments I can’t believe you’re up to this level already 🚀🚀🚀 congrats!

@jameskayten6563 10 ай бұрын

Wow! I wouldn't think you'd any time to read these. Ahh, to be young again! I've purchased a bigger keyboard so I can access the arrow keys more easily but the auto completion feature is often confusing me in any case. I must say, I feel a bit sad when you delete all the nice code you've typed - but of course I can always rewind... I was trying to create a color scheme to match the vids but also help me identify the various types in the code. Sorry - I'm starting to ramble. Thanks for the reply Nick! @@SwiftfulThinking

@mrslana3049 2 жыл бұрын

The best in Swift

@SwiftfulThinking 2 жыл бұрын

Thanks Mrs Lana!

@KanoKendama 2 жыл бұрын

Now we’re getting to the juicy part!

@SwiftfulThinking 2 жыл бұрын

Haha I hope you're ready Ken!

@cinquain0 2 жыл бұрын

I actually didn't know protocols can inherit from other protocols. Pretty cool!

@SwiftfulThinking 2 жыл бұрын

Thanks again for the comment James 😎

@kerryferguson8267 2 жыл бұрын

Love your videos, thank you for the great explanation! You've briefly mentioned Dependency Injections. Will you be covering Dependency Injection methods like creating Factory classes and/or Dependency Containers in the future? Or is that even relevant in SwiftUI because of EnvironmentObjects, I'm not too sure :/

@SwiftfulThinking 2 жыл бұрын

Haha don't worry, the Dependency Injection video is next!

@kerryferguson8267 2 жыл бұрын

@@SwiftfulThinking well would you look at that, my dream came true :’)

@abelhancco4349 6 ай бұрын

@mhfs61 2 жыл бұрын

👍🏼👍🏼👍🏼

@kuldeepbhandari7276 Жыл бұрын

It's nice explanation about protocols , But i have one concern we can also make our Protocols optional for the buttonPressed() function , I think it's good way to reduce the no of lines of code if we make that Protocol optional.please suggest it's a good way or not.

@princeabyss4976 2 жыл бұрын

I can't wait to learn projects from advanced learning, how many learning videos are in this playlist,sir?

@SwiftfulThinking 2 жыл бұрын

There will be about 20 total 😅

@tbg6nb Жыл бұрын

14:15 after using the autofix from XCode, the AnotherColorTheme has primary/secondary/tertiary colors as a var. But DefaultColorTheme and AlternativeColorTheme define them using let. What would be the best practise here ? Make them all three use var or make them all three use let ?

@SwiftfulThinking Жыл бұрын

The protocol must be a var, but if your value is a constant, best practice is to keep it a let.

@jameskayten6563 10 ай бұрын

One thing . . . All I can ever find regarding Xcode education is about the iOS. I'm actually more interested in the MacOS and creating desktop applications. There's a demographic that will be increasing of folks who'd rather sit down with a mouse than be fickly-Fudging with thumbs and virtual keyboards. Have any content that you'd recommend or advice on how to proceed most efficiently towards the goal?

@chrisstromberg6527 Жыл бұрын

So big picture would it be correct to say that protocols help with making sure I'm not making "breaking changes" within my app!?

@SwiftfulThinking Жыл бұрын

Yea it definitely helps for that, but writing tests will also do that (covered later in this course)

@ushadesai6306 2 жыл бұрын

For the computed properties in the protocol definition in this video example, does 'SET' become implicit property because color is set in the struct?

@SwiftfulThinking 2 жыл бұрын

Hi Usha! Computed properties would be "get" only properties. It wont compile if you set it to get and set.

@ushadesai6306 2 жыл бұрын

@@SwiftfulThinking It compiled with 'set'.Can you check that and explain please.

@SiamakAshrafi 2 жыл бұрын

Swift is a protocol oriented langage

@nickfloussov185 6 ай бұрын

There is some confusion about { get }, i.e. why is it possible to 'set' the value of property if it is 'get' only?! Why, say, / let primary: Color = .red / generates no error? P.S. after some research I've got the answer: protocol "functionality" is applied AFTER struct is initialized, i.e. 'primary' property belongs to struct and initialized when related object is already created, and protocol's get/set functionality for this (primary) property is invoked/applied later on 😁

@SwiftfulThinking 6 ай бұрын

“Get only” means after the initial value is set, you can only get it. let primary = .red Here you are setting an initial value but the “setter” is disable. Meaning you cannot update / change the value within the protocol