Just stumbled upon this gem in 2024, and 8 years down the road, this video remains an absolute treasure! The explanation is beyond awesome - PURE GOLD! 🌟 Grateful for the timeless content! 🔥
@bobbob-gv1ev7 ай бұрын
If you want a text version the examples are taken from Head First: Design Patterns -- excellent read
@miguelcerne11507 ай бұрын
Me too, man! I always wanted a good and simple material to guide me through Design Patterns, this is just GOLD.
@edwinzone58077 ай бұрын
Same!!!!
@CSKnowledge0072 ай бұрын
same
@yahyamaadane18 күн бұрын
i feel the same bro i find out this is too much important
@dangascoigne6678 Жыл бұрын
You are the first person I've come across on KZbin that simply and atriculately explains dependency injection. Thank you.
@TheMentalGentelman3 жыл бұрын
I cannot stress enough how good this video is. A lot of tutorials don't bother editing the empty space between sentences, but you do. Props, and I hope your future is bright.
@zanarkdev39043 жыл бұрын
This playlist is almost 5 years old and yet it is THE BEST playlist/video on Design Patterns. Thank you so so much for making everything so easy to understand.
@ahmedhany8339 Жыл бұрын
almost 7 years now, still the best
@oluwatobitobias Жыл бұрын
This is making the top ten best educational content on KZbin for me... this method..."break down the teaching from a reputable book"
@crystalkewe9 ай бұрын
Finally, one of those odd times KZbin actually recommends something of use! THANK YOU!
@Ish-YouTube11 ай бұрын
In the middle of the video I just stared at your messy board and went crazy by the fact I understood every single word and every messy arrow!!! How did you do it??? Man you're blessed, you're a perfect teacher!
@TfYouLookinAt110 ай бұрын
He cared, that's how.
@andiespencer8542 жыл бұрын
This is the best explanation i've gotten throughout all my pattern researches on youtube. The explanations are so detailed as though it was done under the assumption that the views are new to design patterns overall which is honestly the best way.
@acupsf2 жыл бұрын
I've read the GoF book a couple times, but for some patterns, never really got them Your series really made them clear now Thank you for a great series on the design patterns!
@ChristopherOkhravi7 ай бұрын
Thank you very much! 😊🙏
@kumarchandan63367 ай бұрын
I have cracked Low Level Design interviews in companies like Microsoft, Amazon, Atlassian, Flipkart, etc with the help of your videos. Your videos are really helpful. Keep up the good work.
@ChristopherOkhravi7 ай бұрын
Wow. I’m happy to hear that! Thanks for sharing. 🙏😊 And congratulations!
@ahnmichael14844 жыл бұрын
Honestly thank you thank you thank you - I feel like crying right now at how much I *didn't* understand at the beginning of the video and how confident I feel now at the end of the video.
@FernandoHernandez-nr1by2 жыл бұрын
Man, this video was so helpful! At first, when you read what the pattern was I thought I kinda understood it, and 10 minutes in I realized I had no idea what the pattern really is, but by the end of the video I really did understand it. You're great dude!!
@cameronsin19427 жыл бұрын
Broooo! if you were a professor in my school, i'd add all your classes in a heartbeat. Thanks for all the great videos. Subscribed and best wishes!
@lucas_badico5 жыл бұрын
@johngreen said something like this... He is a professor. @Christopher, a professor that we choose to listen and follow. This take us back to the begining of the master and aprendiship relations. Where the student choosed the master and the master choosed what will became of your teachings.
@AnthonyBrindley Жыл бұрын
You are a legend. I literally tripled my income by watching your videos, implementing and understanding what you're talking about and demonstrating it to a potential employer. Your videos changed my life! Thank you so much!
@gigajoules66365 жыл бұрын
I love your energy. Such a refreshing change from staring at a visualstudio window for hours
@Jjjabes4 жыл бұрын
There are some people that are born to teach. You've taken what is fundamentally a dull af subject and made it entertaining.. thank you!
@regevson22448 жыл бұрын
please keep on with this series. Your explaining is sick!
@ChristopherOkhravi8 жыл бұрын
Thanks. I'll be sure to :)
@aaraksheet17 жыл бұрын
"Sick" is used as an inverted meaning.
@mgrycz6 жыл бұрын
Thanks, captn!
@TJ-zs2sv6 жыл бұрын
explaining is sick.....???? Really?
@ke9n6 жыл бұрын
Yeah best, most understandable videos I've seen and the lighting is intimate like we're right there in the room and he's explaining it simply like an awesome friend lol
@olmanmora213 жыл бұрын
I can barely realize this video is 35mins long, you caught my attention the whole time, your explanation goes beyond simple boring design patterns theory, thank you sir, you've got a new subscriber.
@ievgeniiiablonsky11618 жыл бұрын
That's is great! I've started the video just to watch it for a few minutes, just to check it out and watch it later. But I couldn't stop, it is so good! I love how you explaining, it looks like you are obsessed with it and it's great. Please continue doing that!
@ChristopherOkhravi8 жыл бұрын
Haha thanks I'm glad it's useful :)
@MubashirAR5 жыл бұрын
Whats the "3 ❤" next to your name?
@akshitarora4702 жыл бұрын
Can't thank you enough man! I had a design problem to work at somone suggested to use strategies to solve it and I was totally blank! This has given me a great prespective. Going to watch the entire series, one pattern a day is the aim! Thanks again!
@EspatiallyGood3 жыл бұрын
Chris! Total Legend!! Your technique for taking cold "text book" definition, and turning it into something human and understandable is utterly brilliant. Wish I had a tutor or mentor like you to learn from. Thank you so much for dedicating your time to make these video's. I subscribed, liked, and will spread the word to my dev team.
@ayushsharma19434 жыл бұрын
bro, where were you till yesterday. I found this video a few years too late but I am glad I found them. such a perfect and simple explanation. I had that "aha so that's what it meant" moment.
@Arkatori4 жыл бұрын
i love how he teaches AND his accent! I was smiling so much
@guilhermemallmann22515 жыл бұрын
Man, I Work at KingHost, a WebHosting Company from Brazil, I'm a Junior PHP developer and I needed to make a code review from a collegue that used the dessign pattern strategy. I never understang it right, until I saw your video. Man, you're great! I completely understood the point of using strategy with only 35 minutes listening to you. I will watch all your videos about design patterns to learn more and I've subscribed to your channel. Please, keep up this good work, a hug from Brazil
@Roxarras4 жыл бұрын
This playlist really helped me during my studies. Now, after finishing my studies and coming back to this playlist to refresh my memory, I can see I have forgotten quite some things. Thanks again for making me learn and having fun while doing it!
@timneale56573 жыл бұрын
CHRISTOPHER!!!!! My Man!! I love your energy, you break this down SO WELL!!!! I can't say Thank You, Large enough or Loud Enough. You Rock!!! *I know it's been 5 years but hope you see this THANK YOU!!!!
@BuildEver5 жыл бұрын
I'm glad KZbin recommended me this video!
@bernong13 жыл бұрын
This is the clearest explanation I have ever seen. What I needed was to understand how the design came about and how it is implemented and how the implementation works. You hit all these points so clearly. I have struggled understanding design patterns for years, how they are implemented and works. Keep it up. Super clear, concise.thank you. 10 stars!
@xFailGameR4 жыл бұрын
For years I've been searching for a good design patterns course, luckily KZbin recommended your videos and finally I am able to understand, keep going man, you helped me a lot. I was afraid that you quitted KZbin like every other programming teacher, after seeing this video was uploaded 3 years ago 🤛🏻🙏🏻
@sunnyshang43504 жыл бұрын
Your explanation is soooo good. I do not come from a CS background and recently was recommended by a friend to read this book, head first design patterns. I read this part of the book twice and was still digesting it. But your video made it all make sense. Really want to let you know how meaningful your video is for me and people like me. Thank you
@satyendrakumarsharma35137 жыл бұрын
Thanks Christopher! Your way of presentation is so expressive, it feels that the knowledge is being 'injected' into the mind. Please keep posting similar videos over other topics of Computer Science.
@ChristopherOkhravi7 жыл бұрын
+Satyendra Kumar Sharma haha :) Thanks. I will indeed do. And thanks for watching.
@annybevilacqua61812 жыл бұрын
Not even one minute into the video and I already feel this is gonna be great!
@terigopula3 жыл бұрын
Legend spotted ❤️ your content is 100% worth paying for. Kudos to you to make it available for free. U rock Chris 💜😄
@jvsnyc3 жыл бұрын
So many positive comments, all so well-deserved. It seemed all over the place while I was watching it but it just all comes together so well. Only comment is that "quack" is normally pronounced to rhyme with "black", "snack", "sack" and "track". Great video!
@quintonwilson85654 жыл бұрын
I read Chapter 1 from the book and I'm watching this video..... HOLY FUCK, YOU'RE PHENOMENALLY GOOD at breaking things down and explaining them.
@connietranhedberg52513 жыл бұрын
I've spent so many hours trying to understand how to apply the strategy pattern. Thank you for both explaining it with UML and pseudo code - makes the whole difference!
@BinarySymphony7 жыл бұрын
Very nice videos. The way you explain makes people sit and listen what you are speaking. That's very good. Also, you can give the ducks the power to be invisible. lol...
@ChristopherOkhravi7 жыл бұрын
Thank you very much for taking the time to comment. It makes me very happy to hear. About the ducks... you are the invincible programmer and only your imagination shall dictate the limits of your force. I support your invisible ducks :)
@ninakoch17992 жыл бұрын
@@ChristopherOkhravi thank you so so much for this absolutely amazing video series on design patterns!! took a course at my university about this but never fully understood the design patterns until i binge watched your videoseries!! your are awesome!
@luckyknot8 ай бұрын
Discovering this in 2024 too thanks to your come back, excellent and clear explanation of the strategy pattern!
@Sapphiamur4 жыл бұрын
ooh, i love your explanation! perfectly understandable and showcasing where the pattern helps with examples. thank you so much!!
@dnbndu3 жыл бұрын
I Love your Girlfriend.
@s1mpl3_5 жыл бұрын
I'm usually a book guy, as most of the tutorials are either hard to follow or just the explanation is not good enough. But thanks to this video I can finally say, that I fully understand the strategy pattern. Thanks you!
@Codefortyseven5 жыл бұрын
If only I would've received this level of explanation and visualization while I was in the university, my knowledge and understanding of these patterns would be so much better. I'm lucky that the poor quality of education was still able to land me a job as a software developer, which I've been doing as a profession for over 5 years now, but I'll be watching this series through because I think I would learn more from these videos than I did in the university. I'm trying to be optimistic it's still not too late to expand and deepen my knowledge.
@goffredo815 жыл бұрын
coming from javascript, and having read a lot of different articles over this subject, i can say that your explanation about design patterns in OOP is so far the clearest explanation that can be found online. You did a great job. Thank you!
@whitodev34727 жыл бұрын
now this is how you do a design pattern lecture, I understood everything! Thank you so much!
@knvssandeepbolisetti50085 жыл бұрын
Best professor ever seen After these videos no need to see the textbook for design patterns i'll suggest only him . i wrote my exams well after completing the videos
@HologramJay4 жыл бұрын
I had that 'aha' connection while watching this. Thanks man.
@daniahmohammad61013 жыл бұрын
Chris, I watched you videos about design patterns to prepare for a class that I skipped most of it is lectures due to the depressing online teaching, and I just finished my exam. I just want to thank you so much for the amazing lessons you taught me. I was able to refactor the codes easily because you explained the concepts in a very understandable way. I wish you all the best 🧡 *depressed eng student*
@mikesmale18536 жыл бұрын
Well, that was 30 minutes well spent, thank you!
@johnsonvaughn2366 Жыл бұрын
OMG this content is the most simplifying design patterns. I don't even stress about it and mind blow when you write simple code. Thank you for your time and video.
@antoniadieterich724 жыл бұрын
This was the best explanation of the strategy pattern I've heard so far! When you explain it, it suddenly seems easy!
@guruputramahalingappa6952 жыл бұрын
Sir, you are really my GURU now, I struggled a lot to get this kind of Guide. Basically I from poor family, finished my engin in a small college, but interested to learn this DP from expert like you. Now it got fulfilled after watching your first video. Thank you so much sir. Om Guruve namaha. :)
@atobatele5 жыл бұрын
You are a gifted teacher. You break down complex things to very simple relatable bits. I hope you keep these videos coming.
@mandeepmann18354 жыл бұрын
Just started looking at design patterns for interviews and am a little confused. Then came across your videos and they are amazing. Clearest and most simple explanations out there. Godsend!!
@naeroforceofficial4 жыл бұрын
This is a super playlist. As a complete newbie to design patterns I was lacking of some basics, you made me understood the Strategy Pattern, Interfaces, UML and also some hints on naming... In 30 minutes. Thank you!
@tassaron2 жыл бұрын
Every time I learn about a design pattern, it's something I started figuring out for myself through trial and error over the years... But putting a concrete name on these strategies and patterns helps so much
@kyonru7 жыл бұрын
Great job, even for a no-native speaker who is learning english like me, this was really helpful. I understood everything! I'll be waiting for more videos!
@ChristopherOkhravi7 жыл бұрын
Robert Juamarcal thanks! Makes me glad that it's understandable :) Btw ofc also I am a non-native English speaker. But we get better day by day right? :)
@kyonru7 жыл бұрын
Yeah, we do xD
@atikaakmal36617 жыл бұрын
could u explain Composite behaviour
@atikaakmal36617 жыл бұрын
Hiii could u explain Composite behaviour
@chris7263 Жыл бұрын
I'm sure I've also just progressed far enough in learning that I am able to understand better than I used to, but this is the first explanation of a Design Pattern that I completely followed without getting lost, and that's gotta be to your credit too. Thank you for this!
@nguyenxuanson-fgwhcm34714 жыл бұрын
Not being able to fly is a flying behavior, I laughed so hard at this part
@halivudestevez23 жыл бұрын
I learnt that point of view for 4 years at the college... zero distance is a distance too, empty set is a set too....
@ahmedtharwat61793 ай бұрын
You are the first person I've come across on KZbin that simply and atriculately . Thank you.
@cuonginfosys7 жыл бұрын
Great effort! You simplify the difficult things. Really appreciate your work! PS: Looking forward to your next videos
@ChristopherOkhravi7 жыл бұрын
Cương Tạ Văn thanks! I appreciate you taking the time to comment :)
@vitaliymashchenko5 жыл бұрын
It's the best book about design patterns ever. I've read 6 books about patterns and I like it the most.
@YazanAlaboudi5 жыл бұрын
Watching this was a blast! Thank you so much for this video. I'm looking forward to the rest of the series. Great job stressing on semantics. I think we need to further emphasize on that in our dev communities
@Gr33nAv3ng3r4 жыл бұрын
This video was the single most effective resource I have seen. I was sooo stuck trying to wrap my head around how to use Strategy Pattern to solve this problem I was working on. My intuition lead me to Strategy Pattern but I didn't realize how much I didn't understand. Thanks you Soo Soo much!!!
@Сергей-ж5т8ы5 жыл бұрын
When you're said introduction, I heard introDUCKtion😂
@alaamansour60884 жыл бұрын
lol
@KanchanDevi-ms4en3 жыл бұрын
yyogofjddj@@alaamansour6088 I ckckkfkrkekrk
@KanchanDevi-ms4en3 жыл бұрын
fuej j h you fufhfu
@abhilashpatel30363 жыл бұрын
In the book the first example is about ducks
@premk1914 жыл бұрын
This is the best video I found about Strategy Pattern on KZbin.
@antagonisticapple94664 жыл бұрын
My entire family was brutally savaged by a mountain duck. Your casual attitude toward their attacker is an insult to their memory.
@BinGanzLieb2 жыл бұрын
did your entire family see this video?
@gdeveloper3309 Жыл бұрын
The mountain duck must've messed up his whole family hierarchy
@AidenElliott-ff2vt Жыл бұрын
My dad crossed paths with a cloud duck, he is no longer with us. RIP your family, I hope you can find peace.
@adesojialu10516 ай бұрын
The duck 🦆 is being reinvented into duck duck go😅
@psychotrout5 ай бұрын
Where’s that memory allocated?
@ZigzagKazak Жыл бұрын
I love your lessons. Fast, clearly articulated, concise. 10/10
@walchandwarik31677 жыл бұрын
Dear sir, you are simply best.
@ChristopherOkhravi7 жыл бұрын
+Walchand Warik Thank you sincerely for the kind words. And thanks for watching :) You guys are the best for supporting the channel :)
@mazensy34764 жыл бұрын
I can't believe there are dislikes on this video!! AMAZING AND SUPER HELPFUL CONTENT! YOU ARE THE BEST TEACHER ONLINE BROOO!! KEEP IT UP! THANK YOU!
@professorfontanez5 жыл бұрын
I've must have watched this video a million times and it just hit me today that this video also illustrates a very powerful design pattern: Null Object Pattern. NoQuackBehavior and NoFlyingBehavior are basically Null Objects.
@IBRAHIMDEMIREZ2 жыл бұрын
Not only the way how you explain and not how manage the video but how you exchange the information... its like you though the information to my brain. Really effective, only I can say that brilliant!
@_Zephon6 жыл бұрын
Simply amazing. Start studying design patterns here and your channel is awesome. Excelent explanation. :) Greetings from Brazil o/
@TheRadicalCentrist.17764 жыл бұрын
Outstanding. I've done software engineering for 25 years. I find design patterns very confusing in book form, even though I end up doing them in practice because they just make sense. But your explaination I can follow very easily. Well done.
@sandeepsachan14657 жыл бұрын
I Appreciate, Christopher. And I think the publisher should publish this video as part of the book :)
@ChristopherOkhravi7 жыл бұрын
Awesome comment :) :) :) Thanks! Much appreciated.
@RajivBandaru4 жыл бұрын
Hands down the best series of videos on design patterns. Referring to his videos I have been able to clear my design patterns examination with flying colours. I would recommend his series anytime to anyone. Thank you Christopher Ockhrawi for this wonderful series...
@joseramondiazarceo40635 жыл бұрын
A hidden benefit from this is that makes the code more testable : )
@yaoxiongliang94834 жыл бұрын
It’s not hidden. Code reuse already means easier testing.
@mohammedkarro43835 жыл бұрын
My teacher tried his best explaining this pattern, but your video is way more understandable. Nice job dude!
@JAIDEEPMEISTER8 жыл бұрын
Great video !!! Desperately waiting for the other patternssssssssssss .. 12 of them
@ChristopherOkhravi8 жыл бұрын
+Singh haha thanks! Glad it's useful. More coming next week! :)
@sabitkondakc91473 жыл бұрын
ohh damn, I bumped into these videos in 2021/March , your energy makes me bounce up on my chair Christopher , good work.
@Resok7 жыл бұрын
Great video, thanks for the detailed and well articulated analysis!
@ChristopherOkhravi7 жыл бұрын
Thank you for the kind words! :)
@daegudude10484 жыл бұрын
I'm not at the programming level that I need to watch this, but still find it very pleasant to watch, cheers!
@ChristopherOkhravi4 жыл бұрын
I’m glad to hear and I think you’re doing the right thing when challenging yourself! I tend to consume a lot of content that’s above my level 😊 I come back to the videos every now and then and eventually it turns out that I perfectly understand most of it 😊😊 Thanks for watching!
@facundorodriguez928 жыл бұрын
Excellent video! I'm waiting for the next one. Greetings from Argentina!
@ChristopherOkhravi8 жыл бұрын
Facundo Rodriguez Thanks! It's coming super soon. Greetings from Sweden ;)
@johnconnor9787 Жыл бұрын
You are the legend :) I watch all of your DP videos 4-5 years ago when I studied in University and it helped me a lot. Now I desided to refresh the info and I definitely knew what should I watch :) Thank you
@mihailpopa30567 жыл бұрын
Good job! I like your comments and especially your references. Sandi Metz is indeed an excellent OOP advocate!
@ChristopherOkhravi7 жыл бұрын
Thanks! :) I agree. She's got some really inspiring talks. The "Nothing is Something" talk is on my mental list of top programming talks. In the sense that so many things just suddenly "clicked" for me.
@marekbugiel68935 жыл бұрын
@@ChristopherOkhravi Mind sharing rest of the list? :) Seems like something I'd like to know. Thanks for the vid, great job!
@tzhynt Жыл бұрын
I thoroughly immersed myself by reading book prior to watching your video, and as a result, the knowledge became deeply ingrained in my mind. I genuinely appreciate the valuable content you provided
@Ryuk30276 жыл бұрын
I wish I had a co worker like you ! Amazing video, so much clarity, depth with examples and yet so simple :) I'm going to watch other videos like it were a season of Game of Thrones :D One suggestion though, I was really hoping to see an example code of how I'd actually instantiate the Duck class now through code since I have all the options for composition.
@gnanyreddy3030 Жыл бұрын
Magic happens at the end of the video, lots of setup at the beginning. Loved it.
@Drackomass8 жыл бұрын
This is so good...keep them coming :)
@ChristopherOkhravi8 жыл бұрын
Thanks for watching. Glad it helps. Will do.
@mr.clickable38996 жыл бұрын
You all know shit about boxing
@aaronalquiza96803 жыл бұрын
u know how good you are at teaching? i play your videos (in this playlist) at 1.5x speed and I STILL FUCKING GET IT.
@1993wik5 жыл бұрын
Damn, that was amazing. Thank you, Christopher!
@tans.43554 жыл бұрын
I looked around the web and landed here your explanations are very simple and clear and motivated me to refactor a bunch of stuff written in the past. Great Job Thanks. Will look fwd to more series from You.
@matthiasauswoger79947 жыл бұрын
With enough thrust, rubber ducks fly quite well... ;-) But good video, thanks for that.
@ChristopherOkhravi7 жыл бұрын
Hahaha. True, true :) :)
@xevigraham17425 жыл бұрын
I've seen less than a second of the video but I already love this guy.
@Shannxy5 жыл бұрын
Holy shit thanks alot Mr.Bean!! So I already kinda knew what the strategy pattern was, but this whole video made it all ALOT clearer. I appreciate it greatly!
@harshitsen5479 Жыл бұрын
I read this pattern from the book last month, but I couldn't understand this completely that time. But now you just made it so simple. Thanks a lot.
@Gelegenheitszocker7 жыл бұрын
Awesome explanation
@ChristopherOkhravi7 жыл бұрын
+NeoDrick thanks! :)
@amitkumarwankhede8584 жыл бұрын
Your last statement 'Hope that's useful...'. Lemme tell you, you rocked it. Now i am sure I won't forget it. Really awesome.
@heraldo6235 жыл бұрын
That pattern simply turns algorithms into objects and so give you full control of dependencies. Hierarchy doesnt give you full control because of the Liskov Subistitution principle, the subclass must have the properties of parent class.
@globalincident6945 жыл бұрын
The thing is though, strategies aren't all good. They are useful when the equivalent hierarchy would result in people creating lots of subclasses of your class, and in those subclasses sharing lots of code between each other in a way that makes doing it as a hierarchy complicated. But in my experience that doesn't happen that often.
@planomustang14 жыл бұрын
@@globalincident694 - In my opinion, the Liskov Substitution principle points out a flaw/limitation in OO languages, rather than a principle. In real world programming, your rarely get hierarchies/taxonomies that can obey LSP, yet remain useful. I like the concept of "adhoc polymorphism" in languages like Haskell. Model the hierarchies/taxonomies as best you can, but let the differences exist. The compiler will tell you when you go wrong.
@globalincident6944 жыл бұрын
@@planomustang1 I wouldn't say Liskov substitution is a flaw. It's present to an extent in Haskell too - if you are creating an instance of a class, the instance also needs to have the methods of the parent class. If you're having a problem with it, that usually means there's a flaw in your class structure - maybe that class shouldn't have that method - rather than a problem with liskov substitution.
@planomustang14 жыл бұрын
@@globalincident694 No. Haskell allows adhoc polymorphism. In other words, you don't have to implement a parent's method, if it does not apply to the child. The compiler will only complain, if something tries apply the parent method to the child. Javac/C++ will complain at compile time, though there is no evidence the method is needed on the child. That is why LSP points to a problem, rather than a solution. OO models are too strict. Adhoc Polymorphism is a good thing. FYI, I learned about LSP in 1996.
@gustawbobowski13332 жыл бұрын
@@planomustang1 why implemnent a parent method in a child if it's inherted?
@williammorris71574 жыл бұрын
I have an assignment which uses the strategy pattern due tomorrow and youtube recommended this to me. Great explination with great editing. Thank you
..and subbed. Thanks for sharing your knowledge...
@azolee2 жыл бұрын
I really like the way you present these DP's. Your videos are a source of inspiration for me, on how to present these DP's for junior/mid devs. Thank you, keep up the good work!