SOLID Design Principles in

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I am quite sure that every one of you has heard about S.O.L.I.D design principles which help to design our code maintainable and flexible. In this video, I wanted to show you how these principles could be applied to your Angular applications. I hope you will find something useful and enjoy watching it!
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00:00:00 - Intro;
00:01:05 - What is Design Principle;
00:02:23 - Single Responsibility Principle;
00:13:21 - Open/Closed Principle;
00:21:40 - Liskov Substitution Principle;
00:27:15 - Interface Segregation Principle;
00:32:52 - Dependency Inversion Principle;
00:41:02 - Outro;
🔗 Link to the source code on GitHub:
github.com/DMezhenskyi/solid-...
#webdevelopment #angulartip #frontend

[@DecodedFrontend]

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[@alexshubin1]

Thanks a lot for this video. I'm not a native English speaker but I was very impressed that you managed to explain the Liskov principle much better than I heard in my native language. This is because your explanation was from real life but not from books.

[@AndrewRowenko]

Thank you! Very helpful. It is quite challenging to find such a good combination of integrity, consistency and practicality inside one video about Angular. Definitely favorite frontend youtube channel!

[@adriangasiewicz4084]

The Dependency Inversion Principle use case is great. The combination of local provider, Injection Token, useExisting and Content Projection is just epic. Good job Dmytro!

[@DecodedFrontend]

Thanks Adrian! ;)

[@praktycznewskazowki6733]

hejka

[@westhack3552]

Thank you so much. This is all I've been searching for months.

[@jojojawjaw]

Your channel is handsdown the best Angular channel on KZbin, many thanks!

[@Timofei-yy5nm]

Hello, Dmitry! Could you please add more design pattern videos in context of Angular? I find your approach extremely useful to understand

[@jonadushi]

Thank you Dmytro! I love your videos. You are gifted, clear and short explanation, easy to follow. Thank you 🙏

[@TheMaltissimo]

Was looking for an angular related channel and this is noice, well explained and good stuff. Thank you

[@alan614]

This was great. Thanks for putting this together!

[@mktrann]

Thank you! So amazing video!

[@ATTI0822]

Very great examples. I think best I've seen so far. Thanks!

[@RickyBanerjee]

This is very rich content, thanks for sharing it across.

[@miguelcastillo7346]

Admirable your comprehension of Angular, thanks god i found your channel, thank you teacher.

[@BorisTheGrunt]

really good examples thanks. specially for DI

[@maximlyakhov967]

it's the most impressive video on frontend topic! huge and unique content, thank you a lot!

[@ayoubelhayat9650]

Excellent explanation. Thank you

[@rconr007]

Thanks you have explained this difficult subject in a way that makes it digestible.

[@ganesh56789]

Super cool content... Thanks, I am glad that I came across your channel 🙏

[@mashab9129]

hi Dmytro, thanks for sharing great content - very informative and easy to follow/grasp thanks to your teaching style.

[@tebohomakibile3385]

This is brilliant content. Beautifully expalined.

[@anish92]

So Thankful for this Video

[@Billiam112]

Fantastic topic! Thanks a lot! 👌

[@css2014]

I was looking for something like this. Is kind of hard to understand this concepts but with easy examples as you showed, is just simple ! thanks

[@DecodedFrontend]

Thank you for your feedback 😊 glad you liked it!

[@pastagaz4241]

Definitely you have to be mentioned in the Angular documentation! As always, another useful video on your useful YTchannel !

[@JmonteroArg]

Make a pull request adding the link!

[@moacir8663]

Loved it!

[@sourishdutta9600]

Thanks for making this video. Thank you 😊😊👍❤

[@filipslezak5152]

As always, thank you for quality materials. Gonna check it yout later :)

[@giorgi1337]

You have made my day! Thanks a lot. Cheers from Tbilisi✊🏻

[@DecodedFrontend]

Thanks! Happy to hear that 😉

[@maximermoshin393]

Nice video. Thanks for sharing your knowledge.

[@user-wr8gg9kh6l]

very nice, thank you!

[@JmonteroArg]

This contains video invaluable information. Thank you very much for putting the time and effort creating this. The example is fantastic with the right mount of complexity to deliver the learning lesson. Thank a lot. Keep it up. I really like the content you are making.

[@lenvaz8957]

Awesome tutorial! 👍

[@prabuk3819]

Thank You So Much For This Video...

[@anupbista8427]

Finally New Video 😊

[@whatssnots]

Excellent tutorial! Earned a sub :)

[@archiee1337]

Awesome stuff

[@pitsaveliev]

Отличное видео! Лучшее из тех что я видел на эту тему. Лайк и подписка!

[@GuillermoArellano]

Another excellent video, Dmytro. Thank you for educating me on the use cases where SOLID could be used with Angular. I will have to re-watch that last Dependency Inversion section a few more times to understand better. Nevertheless, the 40 minutes taken up in this video flew by with so much knowledge you shared. Thank you for being awesome!

[@DecodedFrontend]

Thanks a lot for your feedback, Guillermo! Much appreciated :)

[@VipinRawat_Offcial]

All explained very well specially dependency inversion principle. 🙏🙏👌👌

[@user-ir4ug1kt4e]

Nice, Thanks!!!

[@vishnum7811]

awesome stuff.

[@amarmesham]

Greate Content !!

[@dennisluken1167]

Excellent video, thank you!

[@DecodedFrontend]

Glad it was helpful!

[@DavidSoles]

Great explanation. Thanks 👍🏼

[@DecodedFrontend]

You're welcome! :)

[@ryanngalea]

Thank you!!

[@adityamore287]

Thank you, Dmytro. I love you man. 👍👍👍👍

[@DecodedFrontend]

😀 👍

[@pauloafpjunior]

Amazing video, Dmytro. Do you intend to continue this serie? Talking about architecture styles in Angular, such as CleanArch, will be great.😃

[@DecodedFrontend]

Thanks for the idea, Paulo!

[@fatiharkan5163]

Thanks a lot, Dmytro! I might have some recommendations for you. I hope It would be great if you describe or explain and show your little padawan's the right way of use. 1 - Observables 2 - HostListeners. Thanks a lot!

[@adiscivgin]

Nice as always..

[@mightytechno]

Great video

[@giorgimerabishvili8194]

Great channel!

Amazing!

[@g3co875]

Thanks!

[@hugofilipeseleiro]

Thank you !!!

[@haroldpepete]

That was awesome, you won a new susbcriber, thank forr share

[@DecodedFrontend]

You are welcome! Thanks for sub🙂

[@BC2Monster]

Not gonna lie, i didn't think i'd learn anything here, but damn the DI Principle was partly new to me. Thumbs Up, thank you for showing me that!

[@maes4224]

You are the best

[@superduper1211]

like before watching ... as always

[@KamelJabber1]

Excellent content!

[@DecodedFrontend]

Glad you enjoyed it

[@Ag3sd]

Good content. I am watching in 2x and it feels normal. 😊

[@the-real-pawook]

Гуд ту кноу, дуже дякую 🙃

[@Kreator321RG]

Rally cool! Thanks

[@DecodedFrontend]

Great to hear that! Thanks :)

[@miroslavmihalakev4588]

Hi Dmytro, thank you for all that interesting topics that you covered so far. The way that you are explaining everything in deep is very very good approach and again than you for that. Can I give you an idea to explain the change detection strategy more deeply with couple of examples, thanks in advance ;)

[@alison.aguiar]

Thanks guy 😀🤝

[@DecodedFrontend]

My pleasure 🙂

[@fryser007]

One of the best exemple of SOLID in real-life Thank you! The last DI exemple was confusing tho :)

[@yeinsdavidllanohernandez1228]

What a great class 👏, I would like to know more about how we can abstract logic everywhere to have a code as clean as possible

[@MichaelEvanchik]

good job

[@ayaramzy6815]

I really 🤍🤍🤍🤍🤍🤍 u .You rescue me today in the interview.Your video before the interview with 2 hours makes solid very clear.Allah bless u .Keep do this please apply head first design pattern in angular also 🤍🤍🤍🤍 u from Egypt.

[@DecodedFrontend]

Glad to hear that, Aya! Good luck with your new job ;) P.s sorry for the late reply

[@sour4ik]

Not sure about Open/Close principle. For me your explanation looks more related to code reusability. I expected smth more parent - child (when child class extends parent) related examples. What do you think? But explanations of other principles are amazing)

[@RSmarza]

Great content! Congratulations 👏👏 Would be great if you create a video about debugging angular memory leaks. 😉 it's an difficult issue to find good references.

[@DecodedFrontend]

Great suggestion! Thank you 😊

[@karthik_vijay]

Make a video on takeUntil of RxJS Subject which can help reduce memory leaks while using observables.

[@SafetyLast-_-]

Does anybody knows what is the name of VSCode extension for colorized offsets in CSS and HTML templates? P.S. Thanks for the video, Dmytro!

[@atulgupta426]

Hi, Thanks for this good stuff. Can you please make a tutorial on view encapsulation and change detection?

[@genyklemberg]

Advanced content, thanks

[@DecodedFrontend]

You’re welcome ☺️

[@phuc_cuhp]

5:04 if you're not good at listening English (not your native language) like me, and has a little trouble to get what rule he said, it's the "And rule" (the auto caption generates "end", and I took some time to figure it out)

[@DecodedFrontend]

Thank you Phuc! 🙏🏻 indeed I meant “And-Word-Rule“. Sorry for inconvenience, I have fixed the subtitle 😊

[@phuc_cuhp]

You're welcome 😊

[@MrKOHKyPEHT]

You right: splitting by extremely small pieces is overkill

[@gururajmoger8649]

Pls explain how to make reusable angular tabs as shared or child components.. that should open components dynamically

[@Alex-bc3xe]

You are indeed the Angular Papa

[@kennethebora6367]

Can you share what extension you're using for those nice block color highlights? Thanks!

[@santoshraju9230]

Excellent video. Thank you. Could you please do a video on ngTemplateOutlet?

[@hiteshsuthar1097]

How to do Component communication as it becomes much harder when working with multiple sub components. Especially, getting data in the parent component.

[@Dons98]

Just best.

[@Moinshaikh611]

This content is really really awesome Just asking which extension you are using for creating component

[@DecodedFrontend]

Thank you! The extension is called NX Console

[@rikihanks]

what if I have multiple reloadables components? how does de abastraction know which one to import?

[@subba18]

Can you do an video of Module Federation implementation in Angular 12 which has webpack 5.

[@ZeroInfinityVideo]

Can you do a video on unit testing long poll with Rxjs using timer, switchmap and takeuntil?

[@slothchunk]

SICK. hell yea

[@balajeebala7810]

Tell about your glasses ,, Where do u get them and which is best for developers ?

[@APEDUCO]

Great Video, Loved It ❤, BTW Which extention are you using to generate components.

[@DecodedFrontend]

Hi! Thank you! I use ext called nx console marketplace.visualstudio.com/items?itemName=nrwl.angular-console

[@APEDUCO]

@@DecodedFrontend thank you very much, I appreciate it 👍👍

[@dfytq]

how to maintain single responsibility in case u need to show the user pre-selected values in the dropdown?

[@TheDeseth38]

Have you thought about making some series about jasmine and tests in Angular? I would be happy to see it on your channel. You do great, keep it like this.

[@eugenekalashnikov9331]

Why Jasmine? Jest most probably

[@JoshDeveloper]

Good content as usual bro, I like it. ♥ Just I wanna mention your little typo that "wether" must be "weather" :D Anyways,, keep posting such nice videos

[@DecodedFrontend]

ah... Indeed, you're right :)

[@harpreetsinghsahota5191]

Hey Dmytro, Just a thought that we can mark properties optional in interfaces in that way we need not to make multiple interfaces. What are you guys think about it???

[@jacqueskloster4085]

A little side note for the Interface Segregation Principle, since it has a major benefit that maybe isn't clear in the beginning: The angular lifecycle hooks are a great example since every hook method has its own interface. The benefit of the principle is that a) implementation developers do not need to implement irrelevant code (as demonstrated in the video) and b) implementation developers of your library/component whatever will only ever see those bits of the implemented code that is relevant to them when you provide them references to classes. b is maybe not so obvious but imagine you had a class that has some methods that must be public due to other internal dependencies (the way component classes are forced to have public props/methods for their template immediately comes to mind) but you don't necessarily want the implementation developers that use your class see all the methods. The solution is to write an interface and only ever provide variables to the class typed with that interface. That could be in callback Methods, abstract methods or anywhere else where an instance to a consumable class would occur. This pattern is especially useful in typescript where you have so many different ways to compose your classes due to the nature of javascript. Example: You have an API abstraction with read and write methods (yes that sort of breaks CQRS, but let's ignore that) but you want to expose only the reader API although all operations are implemented in one class. That's where you would expose the class instance by typing it with the IReader (silly name, sorry) interface. Consumer code can now only access the reader methods. Unless they (apiInstance as IWriter).write :D

[@seblaise94]

Awesome video, what is the name of the extension your using for generating the component?

[@DecodedFrontend]

Hi, it is called “NX console” :)

[@user-zy2jw1pi1f]

what is the name of extension he is using to generate components any idea ?

[@NaomiNos]

What is this VS Code extension used in this video to run ng commands interactively?

[@SanketLakhera]

Great video. Just like to know how to integrate git in vscode just like you?

[@salarystealer]

great

[@youraccountissuspended]

hello sir, do you know how to use common module in child module without import in child module i have parent module that import common module and child module