Sealed Classes VS. Enum Classes VS. Sealed Interfaces - When to Use Which?
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- Опубликовано: 7 сен 2024
- In this video I'll clear the confusion between the different ways in Kotlin to combine related options together.
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Sealed interfaces is not about "saving a little bit of code" it is to reduce the memory allocated, which is twice less for the interface in comparison to the class.
Of course Sealed classes come with their own costs that many programmers don't consider...
And why all use sealed class ever with empty constructor, if as we can see in the video the same with sealed interface (object, data class)? Don't know about ability to use interface?
@@dekus80 o believe the reasoning explained well in the video. There are case when you simply can't.
Also interfaces give the nifty ability for each subtype to implement multiple of them, in contrast to classes only allowing to extend one of them. If for some reason you need the children of your sealed type to extend other classes, you can do so with the sealed interface. And obviously, if the children are interfaces, then their sealed supertype cannot be a class, only an interface.
4:30 - press TAB to delete the remaining after auto complete without delete it yourself
Did not work for me. Can u explain?
I was always wandering what's the difference between Sealed and Enum classes. I didn't knew that the Enum classes have more functionality than just declaring a constants. Thank you for explaining the differences in detail! 🤗🔥
Me too.... I also wandering this difference~
This type of topic is fascinating and is very useful for job interviews and personal improvement. Keep creating this type of content too ♥
Thanks Philip, yesterday I searched the difference between sealed class and sealed interface so your video is welcome
Big up
At this point,
You are making videos on my recent doubts/confusion,
Thanks alot, keep it going 💪🏻
Hey 👋. Could you make a video about android notification. More importantly how to use dynamic title and text from a database everytime that the notification fires. Thanks in advance.
Thanks for the idea :)
You can send data payload with notifications and retrieve it in service class as remote messages
Man... Thank you so much. You are answering all the questions I have for Kotlin and Android. It's like you're reading my mind. Again, thank you.
Thanks Phil, you have really made my development journey an easy on. However, I will love you to make a video on how to implement mqtt or any form of broadcast receiver with clean architecture. Thanks
Hey Philipp! Nice video.. just wanted to add a minor point- Kotlin stdlib 1.3 and above allows us to iterate over/perform transformations over subclass instances of a sealed class - though it is a bit more expensive than enums. But the good news is you don't need to keep track of a separate list for this purpose.
Goes something like this:
SealedClassExample::class.sealedSubclasses.map { it.objectInstance as SealedClassExample }.forEach { }
(the casting is to assert that we know a nullable case won't exist)
Cool, didn't know this
Nice vid, how about Creating Shortcuts? Static, Dynamic, Pinned, maybe it could help others if they want to shortcut some of their features.
man i tried every other video but this is just legit thanks a lot man
thanks for this content, I agree with you, the Kotlin documentation wasn't that clear about the difference between Sealed interfaces and sealed classes. It is now clear to me :)
I think it's quite remarkable how subtypes of sealed types are almost always nested inside them. It feels like an unspoken rule of sealed types to declare subtypes this way, although nothing stops anybody from declaring them outside.
Because it's much more intuitive to access the values. If not declared inside, how will you know which values belong to the sealed class?
Thanks! I was actually following another tutorial of yours, and when I saw you were using sealed classes instead of enums, I was trying to understand the difference. This really helped clear it up!
Great video make many videos like this!
Thanks Philipp for your tutorials.. it's always like you see some of my struggles on stuffs like this. I want to make a request that can you do a tutorial on workmanager firing a notification with upload progress of a file using retrofit. Thanks 🙏
I have a full workmanager guide already, would just require a few adjustments
@@PhilippLackner Ok great
I can suggest to make a video about advanced feature in compose or build a small project using MVU or MVI architecture.
Hi
I love watching your videos very easy to understand all difficult topics in android in that way it would be nice to make video on ci/cd integration iniside slack channel
Your videos helped me get 12k $ job with 3 years of experience. Thanks man
I like your IDE theme. Please give name of the theme or the plugin name you have used for theme. 🙂 P.S. I am a big fan. Keep making such videos.
Hi Philipp, You always bring something new to us and clear our confusion.
BROOO thankyou so much, this really helped and the tutorial was really easy to use as well :)
another way of saying that all a sealed class or enums types are known at compile time is that they are algebraic classes
Hi Philipp, can you please make some videos on Unit and UI testing with compose and MVVM.
Already have that, search for ultimate testing guide
@@PhilippLackner aah great, thanks
Thank you for explaining. I like a lot of your videos.
Massive explanation dude
Thank you for making this video. 🙌
Could you please make tutorial video about room encryption
Pls make a video on consuming graph ql apis
I'm too busy reading these comnts and not paying attention again.....and I'm Nice tutorialgh
Great video as always. Cleared many doubts.
btw .. What's the theme and color scheme you using in Android Studio?
Thank you philipp!
Can you make a course explaining Paging3 in detail? There aren't many educative stuff about Paging3 (of course except Google's complicated Codelabs!) .
I have a video about paging where I also explained why I don't like Paging3 :)
Great video, thank you. Yes, sealed interfaces are definitely simpler than they look. I think for the future it would be interesting to see about compose optimization, something about @Stable, @Immutable annotations.🙂
I have been waiting for this video for soooooooo long
Can you make video on advanced concepts in Recycleview
First of all i will thanks you for the amazing video, i have one question in my mind related to accessibility of sealed class, as you have told that we can not inherit the sealed class in other module but it is also not inheritable inside the other file or packages.can you please make it clear?
Thank you.
Please a video about baseline profilers
Hey Filipp, could you make tutorial how you can create web app + Kotlin + database + docker + docker compose + some cloud?
Great explanation bro. Thanks
thank you greatly
Thanks a lot
Nice explaintaion bro 👌
Thanks for the video. could you please make video on apoloclient and graphql
Can you make a tutorial about using openCV in android
8:50 It's true.
Hey Philipp, great tutorial I'm kind of stuck in a problem which is how would I be able to use liveData.observe in compose as I need to update a sort of UI. Would love to have a video on it.
What's the name of that color theme you're using?
Thanks champ
thanks for a great video
Great video!
Are you the guy that StackOverflow uses in a ad?
Cool video, thanks and like ☺
Please teach a ndk, automotive infotainment(aosp), Ble related tutorials
Thanks Philipp 👍
What is the name of your ide theme plugin?
Hi Philipp, currently I wonder how to use FirebaseUI with Jetpack Compose. Is it good topic for you to make a video?
VERY COOL
YOU ARE THE BEST 👍👍👍👍
Can you consider explaining concept about RxKotlin or RxJava
Got tons of videos about flows. All you need
An app with unit testing ,clean archtecture,dagger,caching
That exists: ruclips.net/video/8YPXv7xKh2w/видео.html&ab_channel=PhilippLackner
@@PhilippLackner Thanks lemme chk
Super cool 😎
Thank you a lot for the video, it is really explict and helpful for beginners.
Thank you !!
Welcome!
You are really great 👍
this video is very good ! Post Phillip flutter lessons on youtube
Can there be “too many” sealed classes in a project? 🤔
Hi, thanks for a great video. May I suggest you make a video-lesson about avoiding if-else inside UI layer. For example how to refactor: if (isVisible) View.VISIBLE else View.INVISIBLE using OOP
Awesome ❤️❤️
Hi , Phillip I think it will be good idea making a tutorial about hms and gms seperation with product flavors 😇
Should we need to learn Flutter with Native Android experience.
Yes, when you create flutter project it will create sub projects for android and ios configurations app, you can run native android in flutter with kotlin, swift, object c, java
Nice👏👏
So sealed clases is betta for login tho lol thanks I was stuck on this stuff for a bit
Enum restricts the value whereas Sealed classes restrict the type.
Sealed classes are good when you want to create restricted types that can also have their own state instead of just constant values...
⚠️ You should rename the channel as ROMANTIC CODE 🤗
I used to like to use sealed class, but after I found out that Parcelable was not available, I used the model related to Acitivty/Fragment as enum.
Parcelable works for sealed classes
Post Phillip flutter lessons on youtube
I don’t even have soft soft and I’m watcNice tutorialng tNice tutorials sNice tutorialt
Post Phillip flutter lessons on youtube
Post Phillip flutter lessons on youtube
Post Phillip flutter lessons on youtube
Post Phillip flutter lessons on youtube
Post Phillip flutter lessons on youtube
Post Phillip flutter lessons on youtube
Post Phillip flutter lessons on youtube
Post Phillip flutter lessons on youtube
Post Phillip flutter lessons on youtube
Post Phillip flutter lessons on youtube
Post Phillip flutter lessons on youtube