Core Design Principles for Software Developers by Venkat Subramaniam

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Writing code is easy. Writing good quality code is an entirely different story. How can we measure quality of design? How do we know we're doing the right set of things that will leads us to a better design? In this session we will learn about some core software design principles that help programmers everyday. Instead of talking about theory and what we could potentially do, we will take on multiple examples, discuss the solution, pros and cons, and bring out key design principles that have an impact on the outcome.

[@kookoon]

this guy is so funny and easy to listen to, i would listen to him forever.

[@crabsynth3480]

Its been 3 years since i first came across this video, I watch it once a month atleast ever since... everytime i watch it, i learn something new.... right now i spent an entire week coding along and understanding the intricacies of the topics, tracking my code at all levels across all the various layers... and my oh my its been a fun week! I feel like ive reached Enlightenment... and the best part is there is still so much more to learn. Venkat... you are my Hero! Kudos !

[@TripAndVlogs]

same here

[@josiahtobas9172]

I've been looking for someone who teaches good design principles. He has what it takes, and I'll be viewing more of his videos.

[@OneLastHike]

I never thought I could listen to a tech talk for more than 5 minutes and not fall sleep, this is truly an art from Venkat's side that he can keep the audiance's attention and interest for as long as he is speaking... the topics that he is talking here are all valuable and true and yet extremely boring... but when he presents them, they are no longer boring..

[@harialla5939]

Must watch for every Software Programmer. First time i have watched a Tech presentation like a Movie. I have become fan of you sir.

[@Gordon972]

And now I am gonna create a manager class and as you would expect, manager does absolutely nothing

[@sameerlangde1234]

Rightly said - you can only improve your design by applying all these principles is when you retrospect - applying it while writing code the first time would be like recollecting all the rules of grammar before forming a sentence to speak. Really thankful for the videos.

[@DanielSaldivarSalas]

I have literally been trying to understand the SOLID principles for a long time and have been having a hard time grasping my head around it. After this talk I finally understand them

[@Naqashized]

Every developer shall listen this talk.there is a lot to learn from it....Chaa gaye hain Venkat bhai....

[@blarvinius]

"If we don't know about a problem, let's wait untill we know more before we write code for it." Good.

[@chiranjibghorai6950]

"Coding is like violence, if it doesn't work use more of it" :D

[@testamento13]

Best presentation ever ^^

[@reemuskumar1]

The presentation is very simple. But, one has to watch it over and over again to get all of it. Thanks a lot, Venkat :-)

[@mohamadmawed6078]

Great talk from a truly genius developer. You are amazing as always.

[@bamba2514]

what an awesome presentation

[@mohitvalechay]

You are the real champ Venkat!...really entertaining and informative...lovely.

[@ThingsInDubai]

Venkat, The greatest java speaker ever !

[@adrianb3507]

Interesting video! Watched till 41:30 but i've got other things to learn atm! and will get back to this another time.

[@mirageman2]

He is an excellent comedian, that is more fun to watch than any as comedy show labeled stuff I've seen so far.

[@crdave1988]

What a wonderful talk. He has a great presentation skill. Talk is full with quotes which are funny and knowledgeable at same time.

[@spandiar]

looks like i found Venkat so late in my learning curve. what a command over the language...hats off

[@GG-uz8us]

Never too late being a clean coder :)

[@matterhart]

Good explanation of when to implement 21:50

[@chetankhandave1072]

Good design have loose coupling, but all Core Design Principles are tightly coupled with each other. If we violate one principle, others also get violated. 😄

[@RiteshManTamrakar]

DRY SOLID Presentation. Thanks!!! I will not YAGNIy it in my work anymore :)

[@nO_d3N1AL]

Great presentation; although very similar to his previous ones.

[@kovalski6000]

In one word: genious :) Than You sir for sharing your knowledge with us

[@mrnettek]

Love....lol...this guy is pretty funny.

[@drygordspellweaver8761]

Classes should be deep though. One layer of abstraction per class or method is adding more complexity than it resolves.

[@leomak7580]

Great talk. I really like the way he thinks.

[@auchan42]

Still relevant in 2019

[@seemasvegetariankitchen6238]

Venkat sir.. You are amazing as always

[@johncenakiwi]

I discovered Venkat today and I am lucky I did.

[@JuanGarcia-zy8yw]

i'm so thankful ,i came across your videos.

[@amadoudia3297]

great presentation!! a lot of very good anecdote, thanks

[@nyrtzi]

It's the same with user interfaces. Familiarity isn't the same as simple. Devs often confuse a familiar-looking user interface for a simple one.

[@jimihenrik11]

Man I would like to watch this right now. But since I am at work I need to put this on my watch later and probably forget about it.

[@Moonz97]

Awesome guy. Entertaining all the way through!

[@JohanZahri]

He invented TDD 17 years ago! (Joking..:D) Loved the lecture.

[@crabsynth3480]

Kent beck is giggling at the joke :)

[@SpiritOfIndiaaa]

thanks a lot Venkat sir , you rock as usual....thank you

[@Vuco7]

"Coding is like a violence - if it doesn't work, use more of it" - made my day xd

[@Rethe1980]

I'm exhausted only for listening. Great talk!

[@wwhill8033]

Well Done Venkat!!!

[@jalalsadeghi66]

Great presentation ,good explanation of detail of software design principles

[@salih.k8939]

I'm currently experiencing almost every single word that came out of your mouth in my internship Venkat. Wish me luck.

[@_sudipidus_]

1:30:10 Can ayone tell me what's the editor/tool he is using while demonstrating? It seems simple like a text editor with easy compile/debug

[@jnana2306]

So nicely explained the complicated stuff

[@manojsethi6040]

Great session... life learning... well presented man. 😇

[@hamza_belmellouki]

I've laughed a lot with Venkat

[@Omego2K]

I don't get it at 2:05:18 How does inheriting from A violate LSP here? The contract of using B through a reference of A remains identical. You are able to substitute B wherever A is needed without repercussion.

[@Moonz97]

What I think he was trying to achieve in that example is a showcase of using composition over inheritance for *code-reuse*. He advises against using inheritance in that example because class B can substitute class A, which might not be what you were after; that's what he means by 'having a great burden'. LSP wasn't violated, it was unintentionally created.

[@sanjeen2503]

just before that he explained a repercussion - giving a Stack to a class that expects a Vector. The Stack was treated like a Vector, which is bad.

[@NikhilKumar-ry7eg]

Great talk... Thanks

[@ujjwalverma5893]

This is quality content 👍

[@bikejoede]

Fantastic teacher!

[@bipintube2009]

Great session...

[@Holdino_]

Where can I buy his courses?

[@trinhduyhung8211]

This guy is awesome

[@roboterbasteln]

1:12:48 A good code is like a joke [...] 1:13:34 And then you go home and refactor the joke -- Brilliant.

[@thesud7]

Anyone noticed Venkat is wearing socks? That is - as the lecture - great :D

[@rahulraviprasad]

20 mins into the lecture and all I am focusing on is his feet, trying to find Socks.

[@liester7]

I've seen him speak twice at conferences and its true, he never wears shoes during his presentations.

[@satishrock9621]

You can open Shoe repair and tyre puncture shop.

[@LongValleyT]

32:28 - 32:44 ; 1:02:21 :D

[@TrendRain]

24:36 is where i postponed watching this video. "I am smarter tomorrow than I am today."

[@erichalim]

So functional programming better than oo programming?

[@StefanoColetta]

Awesome.

[@Metamor-phosis]

1:05:00 - long methods are bad... because they are hard to NAME, , I cant believe no one in that entire room called that one out

[@kenichimori8533]

Distance presentation

[@narwadikar]

good expln

[@BryonLape]

If you don't comment code, but use one page of Javadoc, you are a hypocrite.

[@crabsynth3480]

For me, Javadocs are not comments, they are created using comments... but they are a different entity. Javadocs helps us keep documentation updated and easy to manage, but normal comments get left behind when code is changed. Comments are great for low level, hands on, quick note taking but good production code should have minimum amount of comments because the design should speak for itself. No hypocrisy involved.

[@lamaklumbo4303]

cool

[@A09550]

His accent is very good, no Indian accent.

[@dengan699]

Phạm Hữu Bằng except his Rrrr

[@crabsynth3480]

Actually this is the true Indian accent, very less people talk like Apu from simpsons if any... Good indian speakers always use this style of speaking. His lectures makes me feel nostalgic, reminds me of my childhood days in school.

[@dengan699]

funny and informative!

[@sundargautambabaji]

9:48

[@juliarekamie]

👍✨😊

[@mallik24us]

Even after 1.5X speed , i still feel its 1X

[@adipratapsinghaps]

57:40 Venkat: Who thinks long methods are great idea? Competitive Programmers: Yes. 500 lines of code all in the main(). Not just long functions but 1000 variables too. Global. Also, now while() loops. We'll use WHL(). Oh you don't know what WHL is? Oh its just a while loop in a pragma. WTF is this editorial?! This is SOLID compliant. The writer is a noob. *.Mails the editorial a "better" solution which is just the same code with everything written in the main() *

[@thdoom81]

i TOTALLY don't agree on not having comments..that is just plain stupid...too much joking not enough seriousness

[@JDLuke]

Comments aren't compiled, and do not (necessarily) change when the code is changed. Keep 'em sparse: Good code is self-documenting most of the time.

[@crabsynth3480]

Its not stupid at all... you just missed the point... he is not advocating for comments to be outlawed, instead he is saying that in a good quality production code, the design should speak for itself and you should not be using comments.

[@andreidei]

wife implements alarm .. LOL

[@abhaynath5833]

59:58 Do you work in hell? 😂😂😂😂

[@antimojv]

kzbin.info/www/bejne/op2qmIJtadqLg6s standing ovation "I know where does those method come from.... The people who wrote long methods are working now make those method long as we speak..... "

[@Dennis-er8xc]

Fk he speaks continuously, for 2.5 hrs. 😬

[@redbenus]

Good talk, annoying voice tone

[@Wasteomindy]

Interesting idea - to use a text editor for the presentation. You can change the slides on the fly :)

[@BoHanLiao]

Wow, That's embarrassing when I realized that I'm violating these principles everyday until now. Thanks for this wonderful presentation!

[@MusicByJC]

Good video. Good energy in the presentation.

[@kvimol]

I like his statement "A good code is like a joke". This is the best explanation.

[@Skiamakhos]

Evidently more a Bob Monkhouse fan (quick-fire 1-liners) than a Billy Connolly or Dave Allen (long, rambling stories, many digressions, punchline hits you out of nowhere & has people in the audience incapacitated from not being able to breathe for laughing).

[@abdulelahaljeffery6234]

even though he takes very few pauses while talking, he is still easy to follow :)

[@ajaymenon6667]

A nice watch after having a really bad day. :) Thanks Venkat.

[@rafaelveggi]

This is an excellent, awesome, enlightening talk. And, also, this has got to be the loudest video of the youtube platform. Just like an AC/DC show.

[@TeluguAbbi]

Ego is like cholesterol. 😅

[@antimojv]

This what someone called "Is in God Mode": make thing simple and easy to understand

[@talk2niraj]

Great energy and great pace of presentation. Crisp explanation of various design principles. Single shop to buy all design principles. I would recommend to many.

[@sanjay005]

Longest method I have seen with so many lines that even putting a single line in that method, compiler would give "code too large" error for that method.

[@diogenesok]

Give this guy a cookie!

[@AmNotLegend]

let go of the ego, maybe turning out a bad design; what's matter with an emotion as designing, could be a point?

[@JRK_RIDES]

Take time to design and code 9:50 Pls 😂explain this to my product team.

[@ngdinhthi]

Great, Thank so much !

[@jaykilleen]

Great one! Reminds me of Sandi Metz talks. Such good leadership. 10/10 would watch again and again

[@_gomanish_]

Does anyone know which editor he's using?

[@enigma_387]

Superb talk. Really informative

[@daverdal1]

haha, "the aliens wrote it when I was sleeping" . ahahaha

[@SaudBako]

Is he my lecturer or my shrink?

[@ThakurArjun247]

I think he is wrong at 1:59:20, Scala doesn't have restrictions on collection of base class not accepting derived classes.

[@user-mr-m12312]

Very informative video!