7 Design Patterns EVERY Developer Should Know

[@WestonJP88]

I REALLY like the analogies. That's the best way for me to grasp the actual concept. Just found you on KZbin, and I already like the content.

[@RafaeldaSilvaPeres]

Yes YES WE LOVE ANALOGIES! Please! Best way of teaching and learning! Starting from the big picture, analogies and then down to the specifics! People seems to want to glorify knowledge sometimes by hitting with the specifics right on their face making them watch and rewatch or just give up on it, but this way u go helps alot!

[@kopilkaiser8991]

Learning from you is a fun and engaging activity. This is how teaching should be delivered. Structured, concise, and informative 😊

[@noodlespwn42]

most of these are intuitive. it's great to formalize these concepts and this video does a great job at providing a high level overview of them. thank you

[@ivanlawrence2]

I love the format of your videos... I also love that in your examples of each pattern you are also reducing the nesting and using early exiting which is the opposite of what the people in the repo I'm currently in have done. My first pass for just about and change is 1st to reduce nesting, 2nd try and apply the appropriate pattern (like taking a constructor with 30 params and converting to a builder pattern, or passing in an object which implements the builder pattern, which means now I'm the lucky SoB who gets to go "fix" all the other code), 3rd weep and commit

[@ivanlawrence2]

Oh, and "bless your heart" hit me right in the feels... and pronouncing facade the way JFK might have done it (fah-Kay-d) is how I like to explain it ;)

[@zayne-sarutobi]

Nesting is really a bane of my coding existence 😭

[@vincentmontano4518]

The analogies are spot on! I learned more from this video than the entire book and online tutorials combined about design pattern.

[@adria3439]

Nice explanation, you have a great body language and it helps the viewer to keep watching the video

[@mykalimba]

Great explanations. I had to watch the section on the Builder pattern a few times over to make sure I didn't miss this, but I think you glossed over the most important step in how this works. The key is that each of the methods that initialize something returns the object itself (i.e. "this") as the return value, so that it's possible to chain calls to those methods as you demonstrated. An astute viewer could pause the video to see this in your code, but I think it's worth an explicitly mention.

[@theteacher3163]

loved the video! the way you describe the patterns is amazing. I'm sending this video to every coder I know. Subscribed!

[@pouyababaie2159]

This was the most easy way to understand all of these standarts. Thanks ;)

[@hisoka500]

Bro, this is the best thing I've seen in a long time! Keep sharing content like this! 👌

[@derivadadekonoha]

This is the most easiest way knowing to concepts of the design patterns I've ever found. Your clean and structured way of teach gives us the only task of learn, as easy as possible. Thanks for this amazing content....

[@ianramirez1577]

I learned more from your video than in the university. Thank you and regards from México

[@CokYogaIXGXXVII]

The only time I paused was when I liked and subscribed you, amazing video man!

[@shahabjami3161]

Great refresher! Love these type of vids

[@abzrg]

09:03 schtruschural pattern Simple and concise explanation. Thanks!

[@gavinwilliams4330]

Great video! I love the way you explained things and the way you demonstrated the benefits of each pattern in code.

[@mohamedraslan3504]

Excellent explanation, loved it a lot, your way of explaining stuff with simple words and analogies is perfect, Thanks

[@Zeraltz]

Finally I understood these design patterns, you know how to explain things! subscribed

[@another_arthur7]

I like the way you explain how we can actually implement what you tell about, got a new sub

[@wiilamaral]

I recently found your channel, and it’s impressive the way you explain things and make fun at the same time. This makes the learning process much better. Thank you! Subscribed 😉🧑🏽‍💻

[@abymathew575]

Really nice video. First you explained the concept very well, then you showed the practical implementation in codes with real scenarios. This way of video presentations are really helpful to understand the concept. Thanks for your effort and expecting more from you

[@jamiecodes96]

This was so good. I’m sharing it with my dev team! Thank you

[@HP_Tubcraft]

this is a great video! fellow java dev here. i'd love to see more java / spring boot stuff! not enough good java / spring boot influencers on YT imo

[@yashh7449]

I loved your analogies, you made it so much easier to understand these concepts! Thank you so much ❤

[@thomkb]

Great video...puts into words what we already "intuited" but now we "know" the why to these patterns. But "freedom units"?

[@ahmadiyad2860]

your voice like graves from call of duty thank you man for all these videos you make

[@BogdanNedelcu-b3n]

Great video, didn't know I was using so many patterns.

[@sebastianalfaro1887]

i was needing this this morning haha, thanks dude!

[@KineticCode]

To newer developers - when you learn design patterns you generally think "oh i can use this here!" in every scenario, making design patterns your hammer and every code problem a nail. In my experience as a professional developer I have never - not once - deferred to the Design Patterns book to solve a problem. Everytime I had used one in my personal projects however - it was always an imperfect fit to a similar problem. You could say "skill issue" but I'm just pointing out that you should not worry about these things before you're employed. Just make things!

[@mattwayne9128]

Newer developers, you shouldn't be making the decision to not study software engineering concepts based off the anecdotes of anonymous KZbin commenters. You will write bad code as you start off. It's inevitable. That's why you practice. Not learning this because of the nebulous idea that you might use it where it "shouldn't be used" is ridiculous.

[@itztlacoliuhqui]

Yeah its not a hammer. Its like 23 different tools actually. Hammer included

[@KineticCode]

​@@mattwayne9128 There's a lot of things to learn when starting. There's alot of concepts with varying usefulness with building software. The real question is what information is most applicable to getting yourself into a position where you can have good mentorship and stability in learning(employed). If you learn software dev because you're passionate about it - my comment shouldn't dissuade a single person because they'll learn these things from genuine interest (as I did!). I'm advocating for learning relevant skills rather than all skills, which in my, yes, anecdotal experience, would exclude Design Patterns. Otherwise it's easy to fall into a sea of theoretical knowledge with no idea of how to apply it practically! I appreciate your perspective btw

[@w花b]

You're not 100% wrong but I made vidéos games and at the end, I was always regretting not making the code more modular for example. It's basically spaghetti code. Design patterns won't make regrets go away but they definitely will make your life easier in the long run for projects you're supposed to build on top of or modify (anything with a long life span)

[@barbara_993]

I would agree if we [in my company] we don't require knowledge about design pattern and usage before employment. I doubt that I will let someone further if they do not know what at least singleton is and how to use it.

[@AmitabhSuman]

Loved your explanation. Very interesting and simple. Tons of thanks!

[@taofeekakinkunmi8990]

I love the way you simply everything. kudos

[@flyte9844]

Exactly what I needed to watch ! Thanks !!

[@bradchellingworth5973]

first time viewer here, listening to this in the background and keep thinking im getting a lesson from Matthew McConaughey

[@PavinWannasirilak]

18:24 Why will a lot of if-else if-else be gone? How can you know what type of the transport should be constructed without the control flow?

[@Slim_dev]

Great Content Man!, please create more of these videos thanks a lot!

[@mcstephen]

A Video i never knew i needed. Thanks alot, for real, thanks.

[@elki_8]

Thank you!! I got exams about exactly those patterns next week!

[@drushkyy2017]

hey my friend, please do more videos where you just show us the code and teach it as you go. you do a great job of explaining simply!!!! thanks

[@jaysonlabarrete9121]

I love your analogies! I subscribed to

[@totollygeek]

Really cool video, kudos. I giggled when you called them “freedom units” 😂

[@acrosstheocean25]

A little confused on the example for the observer pattern you gave here regarding performance. You would still have to loop over however many subscribers there are in order for them to get the notification, and assuming that they are all on the same machine, the work will still be done at the same place. So I don't quite understand how there is a performance gain in this specific scenario, unless that was just an analogy for a distributed system?

[@juancriolivares]

Great explanation. Beside these ones, I really like the decorator pattern.

[@ElHirani]

Thank u im new with these kind a type of things , cause i recently learn oop so this video help me a lot in any terms

[@tiagodev5838]

Great instructional video, thank you! Also, "Freedom Units" is one of the most American things I've ever heard haha!

[@ramgopalvarma5949]

Crazy simple examples to remember, I just wish you provide more code examples

[@PatrickMeppe]

1:30 I have to disagree. The greatest pattern of all times is the Observer pattern. 🙂 In my case I use the radio & antenna as an analogy to explain it to my students.

[@WiktorWandachowicz]

19:54 "And I know this is gonna hurt some feelings. A lot of y'all are just 'IF ELSE-ing, IF ELSE-ing' everything. You know WHO YOU ARE!" Pure gold 😁🤣😂

[@Slim_dev]

😂😂

[@mpack235]

I'm schizophrenic( diagnosed) , i feel like i think like you or you think like me, when i solve problems or when imagining examples to articulate my problems!

[@lilgox3105]

You explain well the design patern...

[@deltatee9050]

Amazing, loved the analogies, sample situations and code snippets which displayed the execution excellently!

[@ziacodes]

I watched you since you had 20K subscribers. Most underrated channel. Please show more code examples. That really helps us!

[@codeman99-dev]

21:31 The notify private method is doing the wrong thing. It should be emitting an event that the subscriber can listen for. The whole point is that the acting class does not need any collection of who wants the result of the action. You emit the result.

[@Kenny-st8cg]

Correct, I don’t think he really understands what the observer pattern is.

[@Valrast1]

Also, "we don't loop through"- we loop with foreach

[@KyleLuce]

Some framework strategies of dependency injection can be Singleton by default and are easier to test. For example Spring Singleton beans are easy to mock since the guarantee of being Singleton isn't language enforced (it's at a higher abstraction). If you do singletons the old fashion way it's indeed a pain to mock any Singleton or static implementation. Kotlin does make static and its object Singletons easier to mock using Mockk, but i believe there are still some pitfalls to avoid.

[@lautidev_]

Nice video, so easy to learn

[@celestinenwachukwu919]

as a junior developer i felt like i peeked into heaven

[@ashishsapkota945]

I came to find out that I have been using most of those patterns without knowing what they were

[@lutfiikbalmajid3128]

Hi, Your new subs here! i like your video, the way you explain, and some little jokes you put in this video haha

[@Ni7ram]

about subscriber pattern.. i know its useful, and the core of reactive prograaming, but I dont see the advantage in this example. i mean you say loop through users is not performant, but it ends up using a foreach, that is essentially the same. the thing is, i dont think it can be done without looping the array somehow great video as always man

[@TVDaJa]

Yeah I was thinking the same thing. I always thought the big improvement it provides is de-coupling things that need to SOMETIMES exchange some data/signals

[@kingcrashplays]

I believe it would be more useful when let’s say a subscriber only wants to be notified for specific events, not all events. Perhaps a user subscribed to a channel doesn’t want to be notified a new video is released but is still a follower of the channel.

[@Doot_00]

great content bro!

[@cris7775]

Love It, great explanation

[@Jonathan-zq8vs]

What are you using to diagram ?

[@TAHppled]

I clicked subscribe as soon as he said “freedom units”.

[@gauravfotedar]

For the factory pattern example, why can't that just be a function?

[@pawel_890]

When can we expect a video of Rust on NixOS on Neovim?

[@diabeticnomad]

6:00 oh shit! That just solved a problem I had sweet thanks

[@youcefmoulla1828]

Amazing video, Thank you

[@alexiosgaming6504]

Bro this thaught me many things. Now i can too speak like i know everything about design patterns

[@NebulaM57]

Freedom Units, I like that. :)

[@BooksWeCanRead]

100% want you to explain everything to me 😅💜

[@Rocknrolla112]

damn, i want to give you more than one like for this video!

[@jasonford7439]

@ForrestKnight Kinda random but can you drop a link to your chair model? Does the seat tilt too or only the back?

[@luan5217]

Nice video! I would like to know what program do you use to diagram ;)

[@parttimewarrior5789]

I don't know who this comment is for, but this feels like watching an Adam Ragusea video except about programming

[@KimHenriksen.]

Great video! “I’m looking for an AI tool that can quickly translate KZbin videos into Danish and play them with Danish speech. Ideally, it should be able to extract subtitles, translate them, and then use text-to-speech technology to provide the audio in Danish, all in sync with the video. Any recommendations or solutions would be greatly appreciated!”

[@scarymojo5809]

Would you still use the adapter pattern if you only accessed the slightly wrong API or library in one location in your codebase?

[@unprogramadormas22]

Definitely no, remember that always we use a pattern we are bringing complexity to the program. If u only need to access one tiny part of a codebase, why would be adding a whole class as an adapter a plausible solution?

[@rojinbijukchhe44]

Thank you man :)

[@Alan-hf2gs]

Fun fact: if you can read the Gang of Four all the way through in one sitting without falling asleep, you automatically receive a FAANG job offer.

[@Dr.Schnizzle]

Correct me if I’m wrong, but isn’t the strategy pattern the same as polymorphism?

[@stereocodes]

do you typically write all your JS in classes? no? would've been good to see these written in the way we write JS using closures and higher order functions.

[@SonAyoD]

fantastic video

[@ImNotAshhhhhhh]

I feel like a lot of the issues that design patterns resolve can be fixed with simple static classes with static methods

[@narcissekabongo2616]

which vscode theme are you using brother?

[@ShootFirstNS]

Is the book ok for beginners? Like me? Learning JavaScript? I read a review and it said that because it's so old and technical a noob like me would just get confused and would struggle to see how the techniques would apply to my journey learning to program. I've put it on a list either way.

[@yowremco]

Might be stupid question. But why is this not done via functions?

[@zayne-sarutobi]

Same questions tbh Classes in js are just too verbose when used unnecessarily

[@codewithfelix3940]

Had never written type script before but it looks so much like java which hv written for so long.

[@Jaybearno]

Does anyone have recommended reading or examples on what to do if you inherit a horrendous code base that has every anti pattern imaginable? Would you try to encapsulate in a better design and unravel it? Or just nuke and start over.(keep in mind the latter will cost social capital). Help!!

[@wiktor99321]

Whats your color theme called?

[@snowman1185-v]

Very nice. Thanks. :)

[@vasiavra]

hi what keyboard is that ?

[@TheForge47]

Nope, you don’t need any of those design patterns. It’s perfectly sufficient to focus on maximizing cohesion and minimizing coupling. In my opinion, the rest is more about convenience - nice to have, but not strictly necessary.

[@kamilzielinski504]

another chapter of OO devs solving issues they created

[@2spiffyytv]

hey does anyone know what kind of keyboard he has?

[@asagiai4965]

I see that's why youtube is sending me notifications from weeks ago.

[@circle4106]

Factory pattern is so much more flexible when you're able to overload the method.

[@owenrossi-keen2594]

Agreed, however: Typescript + object parameter makes this effectively a non issue in 99% of cases. There are situations where I wish TS had proper overloading though... One thing you can do to get around this is spread your params and type them as XOR. This is the best solution I've found for getting something that looks like Java over loading.

[@circle4106]

@owenrossi-keen2594 exactly answers the question i had on implementing this overloading technique on TS, coming from Java 😂. Thanks for the insight.

[@tibrec8]

I think u use Decoreter pattern but not the adpater pattern

[@Sam-u3s7n]

:D I am trying to study here --- why is the surf video ?? lol

[@humphreeyy]

So, singleton pattern is what I was using.

[@oussamahatim5918]

Singleton pattern is considered to be an anti pattern

[@tawandagamedevs]

builder pattern is irrelavent if the language has named parameters

[@thomaswilliams4755]

Not necessarily. `StringBuilder` is useful for when you need to build a long string, and iteration or conditional checks are involved. It'll save on the expensive costs of string concatenation (by maintaining and resizing an array for you behind the scenes, much like Java's `ArrayList` or C#'s `List` work).

[@bertiesmith3021]

@@thomaswilliams4755C++ programmer here I thought that the #1 point of StringBuilder is the efficient concatenation (which high I am led to believe can be really bad), rather than it being an implementation of a builder pattern. C++ has a similar problem but because strings aren’t immutable it is much less of a problem. It’s still worth worrying about, though, and Google’s StrCat solves this (and I have written my own versions many times).