These ideas were saved in my head as a sequence of words for the entirety of my undergrad. If 5 short minutes you managed to actually help me understand a huge gap in my understanding. Thank you so much.

@alexhyettdev

Жыл бұрын

You're welcome Michael, I am glad it helped.

@saumyojitdas4212

7 ай бұрын

​@@alexhyettdev public class Main { String s = "ABC"; public static void main(String[] args) { Main obj = new Main() ; System.out.println(obj.s); } } in this above code String object is created in heap and also of class. So 2 objects in heap. But isn't the string object Abc resides inside class object in the heap?that's why we are calling it obj.s

@rembautimes8808

3 ай бұрын

Good video very in-depth

@crazychase443

2 ай бұрын

i feel the exact same way!! this random collection of words and statements now i feel like concrete concepts in my brain

Perfect, really good explanation. Thank you!

hey this is an excellent video! i'd never thought or read about the link between variable scope and memory. thank you so much!

Finally a much simpler with actual sample code that explain the whole stack and heap stuff. Now I understand why and when OOM occurs in app, the usual suggestion is to increase heap size but said to be slow or when we do recursion recklessly we get stackoverflow.

This video actually answered all my questions about how the stack and heap work together. Great explanation!

A nice and concise explanation . Wishing you all the best for better reach of your subsequent tutorials so a lot from community would benefit

This is an excellent video about how the memory works, I love the last part about asynchronous methods. Thank you for this awesome content. I wish you could speak more about asynchronous functions. 😃

Alex, you made my day. I would call you one of the best instructors! Your explanations are flawless. You explain perfectly in context. For instance, where you explain why variables are not accessible outside the method.

@alexhyettdev

Жыл бұрын

Jake, you made my day! Thank you for the lovely comment. I am glad you found it helpful!

This explanation was exactly what I needed! thank you Alex

@alexhyettdev

Жыл бұрын

You’re welcome I am glad it helped!

The analogy of a stack of books provided much needed clarity for me. I appreciate the video mate!

@alexhyettdev

Жыл бұрын

You’re welcome, I am glad it was helpful.

Wow this was an incredible series of topics, thank you!

@alexhyettdev

11 ай бұрын

Thanks, I’m glad you enjoyed it!

This is one of the best programming related videos I have ever watched. It cleared up so much of my confusion in C++.

@alexhyettdev

5 ай бұрын

Thank you!

hell yeah. idk how you did it but that finally made sense. i had to have heard the stack of books analogy before, but this is probably the first time seeing it played out with actual books imma have to watch this again

Thanks for this simple and straight to the point explanation

@alexhyettdev

10 ай бұрын

You’re welcome!

Not gonna lie, i cant state enough how explanations like this can massively improve your understanding of why code works the way it does. Just learning to code is one thing, but understanding whats behind all of it and WHY whatever thing actually is happening, can definitly up your game. Im not a pro by any means, but i think stuff like this is very important. The visual presentation also makes it way easier to follow and connect the concepts - so thx for that 😊

@alexhyettdev

Жыл бұрын

Thank you, I am glad you enjoyed the video. I find it helps with remembering everything as well. If you can understand something then it tends to stick in your mind a bit better.

That is a great, clear, and easy explanation, thank you.

Your explanations are immaculate! You'll definitely make it big if you want to. I am glad I caught your channel early at 18.4k subscribers

@alexhyettdev

3 ай бұрын

I appreciate that! Will be making more videos soon.

The best explanation/animation ever.

@alexhyettdev

Жыл бұрын

Thank you!

Dude, that was awesome. You explained what I tried to wrap my head around in college courses, in 5 minutes. ily :)

@alexhyettdev

10 ай бұрын

Thank you! 👍

Excellent explanation. Thank you so much.

A hidden gem !!! Thanks you so much, I understand it so much better now !!!!

@alexhyettdev

Жыл бұрын

I am glad it helped!

absolutely brilliant explanation, thanks a lot

@alexhyettdev

Жыл бұрын

Thanks, I am glad it was useful!

Such an intuitive and simple explanation!

@alexhyettdev

Жыл бұрын

Thank you, I am glad it was helpful.

Very well explained. Thank you!

@alexhyettdev

Жыл бұрын

Thank you, I am glad you liked it!

Great explanation. I do mostly web development, but I've been getting into low-level programming recently, and your video really helped me reach out into my bucket of programming concepts and rearrange a bunch of previous knowledge I had about computers into something more clear and concise. Thanks!

@alexhyettdev

4 ай бұрын

You're welcome, glad I could help!

Thanks for the great explanations!

lovely explanation, thank you for this

@alexhyettdev

Жыл бұрын

You’re welcome! I am glad it was useful.

Great tutorial, it really helped me! Keep it up👍

@alexhyettdev

Жыл бұрын

Thank you! I am glad you found it helpful.

Thank you very much i was not able to understand this concept even after reading and watching a lot of videos now i have a good understanding of this

@alexhyettdev

11 ай бұрын

That’s great! I am glad I helped.

@i_am_dumb1070

11 ай бұрын

@@alexhyettdev if possible can you please explain the anonymous function part i didn't get it

Really great video! This helped so much

@alexhyettdev

Жыл бұрын

Thank you I appreciate the kind words. I am glad it was helpful.

Simply love your explanations.. Clean and deep..

@alexhyettdev

9 ай бұрын

Thank you! 🙏

Thank you for easy to understand and great video

Great explanation! Thanks Alex!

@alexhyettdev

Жыл бұрын

You’re welcome!

@Alex Hyett As always, you give the best explanation of whatever programming topics that you cover. Please keep up the great work and keep the content coming. I'm a fan :)

@alexhyettdev

Ай бұрын

Thank you, I am glad you like them!

Loved the explanation !

@alexhyettdev

Жыл бұрын

Thank you! I am glad it was helpful.

Very nice explanation. Thanks !

That's good stuff ❤ subscribed

Thank you! This was great

you actually help me understand a lot ,thank you sir

@alexhyettdev

4 ай бұрын

You’re welcome!

This is good. Have learned some things I could not know in a year.

@alexhyettdev

Жыл бұрын

That’s great I am glad you learned something from it. Thank you for commenting.

Thank you sir. Good Explanation. Please, I wish you make a video on "Why in Java, Do Local Variables Used in Lambdas Have to Be Final or Effectively Final?" and please make the explanations at the memory level too, so we can understand all the mechanics behind it.

that was a clean description of stack and heap. Never knew about anonymous function being a heap, but it makes sense

@alexhyettdev

10 ай бұрын

Thanks I am glad you liked it 👍

Excellent explainer and graphics THX

@alexhyettdev

Жыл бұрын

You’re welcome, I am glad you like it.

amazing, this help me understand everything

Reading a book right now that explains this concept rather poorly over 20 pages. You managed to grant me understanding in 5 minutes, and now I can continue reading past the chapter. Thank you, great explanation!

@alexhyettdev

8 ай бұрын

You’re welcome! I am glad I could help you understand it. Hopefully more fun than reading 20 pages of that book.

Well done! Very good video.

Such a great explanation

@alexhyettdev

Жыл бұрын

Thank you! I am glad you liked it.

Finally, i now understand the differences between these two. Thank you for the video

@alexhyettdev

Ай бұрын

You're welcome 😊

Thank you very much mate. Clear : )

This video was very good! I really like the way you explain!

@alexhyettdev

8 ай бұрын

Thank you! I am glad you liked it.

that was flawless thanks a million man

@alexhyettdev

Ай бұрын

You're welcome, I am glad you liked it.

Great explanation!

@alexhyettdev

11 ай бұрын

Thanks! I’m glad it was helpful!

My jaw dropped when you explained what happens to variables declared in the stack, I never made the connection between this fact and the scope of variables, thank you soooo much !!!

@nikolabosevski1435

3 ай бұрын

Samee heree, I've never even thought of why we couldn't call variables from different scopes, i just took it for granted this opened my eyes

@TheHermitProcess

2 ай бұрын

I'd be extremely weary of taking this for fact. It is up to the compiler to generate scoping rules, as far as I know. Look into it a bit more.

thank you! very clear

@alexhyettdev

7 ай бұрын

You're welcome Julia, thank you for commenting.

Excellent breakdown!

@alexhyettdev

9 ай бұрын

Thank you!

Fantastic explanation, thanks mate!

@alexhyettdev

8 ай бұрын

You’re welcome! I am glad you liked it.

Thanks for the video

@alexhyettdev

11 ай бұрын

You’re welcome!

Awesome video! Id like to add that in csharp async doesnt always equal multithreading, and since it uses internal statemachine which is a class, asyncs may get allocated on the heap

@alexhyettdev

5 ай бұрын

Yes it’s a good point!

Man you're a savior thanks for the clear explanation

@alexhyettdev

5 ай бұрын

Thanks, glad I could help

Learning Redux right now, so very helpful! Definitely subscribing.

@alexhyettdev

8 ай бұрын

Awesome, thank you!

You're great. Thanks

Great video!

Hey man, awesome awesome tutorial

@alexhyettdev

8 ай бұрын

Thank you!

Nice video, very helpful

@alexhyettdev

7 ай бұрын

You’re welcome, thanks for commenting.

How does garbage collection handle memory fragmentation? Is there a heap defrag utility? Do you wipe the heap when a program ends? What is multiple programs / threads run concurrently? Now I need to check the rest of your videos for answers. Thank you for starting my journey.

Thank you!

@alexhyettdev

Жыл бұрын

You're welcome, I am glad you liked my video.

Nice video pal. I love to see a video about boxing and unboxing.

@alexhyettdev

7 ай бұрын

Thanks! Sure I will add it to my list.

thanks for your video

@alexhyettdev

Жыл бұрын

You're welcome, I am glad you liked it!

neat explanation, ty

@alexhyettdev

7 ай бұрын

Thank you. Thanks for commenting!

Amazing explanation, greetings from Chile

@alexhyettdev

6 ай бұрын

Thank you! Hi 👋 from UK 🇬🇧

Create more content, you'll be to a million subscribers within a few short years I have no doubt. Your content is pure gold, thank you for explaining this so clearly.

@alexhyettdev

9 ай бұрын

Thank you 🤞🏻. Regular content will be back again in September. I have had some family commitments that has put a stopper to my videos this month.

@AdrianTregoning

9 ай бұрын

@@alexhyettdev fully understand. Good luck! I quit my full time job as a mechanical engineer to become a programmer/coder of sorts. Bit tough being a student at age 41 but for me I made the decision to ultimately spend more time with my family. Have a super day further.

this video is gold! wow!

@alexhyettdev

Ай бұрын

Thank you!

thanks dude

Incredible. Even though I've been a professional developer for six years, I was having a crisis of confidence tonight because I've worked with languages where I never have to worry about this directly. I was asking myself, "Do I even know anything about computers if I don't know the difference between the stack and the heap?" Five minutes and twenty-seven seconds later, I feel like I have a solid understanding of the difference and I'd be capable of talking about this intelligently. Thank you 🙏

@alexhyettdev

Жыл бұрын

I have been a developer for 12 years and I went through exactly the same thought process before making this video. I am really glad it helped you.

@___gg421

Жыл бұрын

Same here just went through a training where some memory management stuff was covered and I felt like an imposter. This made it all make sense

thank you.

@alexhyettdev

11 ай бұрын

You’re welcome!

Such a precious channel!!! Instant sub from me 🍻🍻

Great video

@alexhyettdev

Жыл бұрын

Thank you!

Loved the garbage collector animation. Very nice and funny

Brilliant video

@alexhyettdev

6 ай бұрын

Thank you!

Great Vid

Love how clear and concise this was! Subscribing. Just a note, it might be helpful to mention how in C there is no garbage collector and you have to free the memory yourself.

@alexhyettdev

10 ай бұрын

Thank you! Yes good point C and C++ (and of course Assembly) don't have a garbage collector. As far as I am aware all the others do but there might be a few exceptions!

Nice explanation :)

@alexhyettdev

Ай бұрын

Thanks 🙂

3:01 small correction. A const is NOT allocated on the heap. In fact, it's embedded on the call site at compile time (in C#/F#/VB), the reference is removed (you can test this: create a const in another lib, reference and use it in your lib. Compile. Now update the const in the referenced lib and recompile, but do not recompile your lib. You'll see it did not change on the call site). What you probably want is readonly, which, in your example at 3:01, would then be allocated on the heap.

@4:23 what do you mean by the anonymous function is pushed on top of the stack and not have access to what previous level down? You mean even variables within main?

Very good video

@alexhyettdev

Жыл бұрын

Thank you! I am glad you enjoyed it.

you are the king

@alexhyettdev

10 ай бұрын

Thanks man 👑!

God bless you man.

@alexhyettdev

6 ай бұрын

Thank you! 🤩

Many thanks to your video, this KZread is valuable, so I read word by word carefully. And I find at 03:55, about the static variable, which is different from what you mentioned in your flvog (the link you provide in descriptions). In ur flvog, in para "where do static variable live", there you said static variables even if they are value types are not stored on the stack or the heap...need clarify? Thanks.

@alexhyettdev

10 ай бұрын

Thanks for spotting the discrepancy! I need to update my blog to make things clearer. Basically it is an implementation detail. In C# static variables are part of the MethodTables on the "High Frequency Heap". Which is a special part of the Heap memory for static variables and internal data structures. In C and C++ they are stored on the Data Segment, which is a special part of the memory for storing static variables and internal data structures. :) Sound familiar? If you look up Data Segment and High Frequency Heap they are both in the same place in memory. By the looks of things they are just slightly different implementations of the same thing. There is an old article here that explains it in depth: web.archive.org/web/20140724084944/msdn.microsoft.com/en-us/magazine/cc163791.aspx Jon Skeet also has a good article on it as well: jonskeet.uk/csharp/memory.html

@leeeric6292

10 ай бұрын

@@alexhyettdev Thanks for your response and your KZread.

Good video. One question: In the case of results from asynchronous methods, once the asynchronous function completes, who cleans up the result in the heap that was left over by the async function?

@alexhyettdev

8 ай бұрын

Generally they will be cleaned up by the garbage collector in the same way other objects on the heap are.

@Black_Cats_

8 ай бұрын

@@alexhyettdev thanks for your response

Noice explanation thanks mate

@alexhyettdev

7 ай бұрын

Glad it helped

Heap is the same as heap data structure for prioritizing values?

Can you recommend 2 or more books on memory and data structures?

This video needs to be promoted higher on KZread. Anyone who wants to learn Rust should start from here before diving into the borrow checker.

@alexhyettdev

6 ай бұрын

Thank you. I am glad it is useful for people learning Rust as well. Some of the C# references might not be applicable but hopefully the rest is. I need to learn rust as well actually!

Great explanation! Thank you! My only bit of feedback would be to stay on the graphic visualizations longer. The constant switching between the visualizations and the shot of you talking is a bit jarring and makes it harder to focus.

very nice video

"In a previous video" you talked about value type and reference type... can we get a link to that? I found a playlist but this is the first video in it.. there is no previous video

@alexhyettdev

10 ай бұрын

It was very briefly here: kzread.info/dash/bejne/on96xbisYqvPkqQ.html

thank you

@alexhyettdev

6 ай бұрын

You're welcome!

what does "heap has higher overheads" mean...? higher cost? I assume (seeing that little 'watch' with pointer at high) that you mean for example it's slower, because it's more complicated for the "machine code" to add to the heap?

@alexhyettdev

10 ай бұрын

Yes higher overheads as in performance. It is slower to add to the heap compared to the stack.

Hello sir at 3:20 in the video you say that in must run times there is a garbage collector that will clean the memory from the stored memory location after it has finished execution. Not sure if you know but with in C and C++ language we do not have a garbage collector I was told. So in C and C++ we delete pointers manually after block execution. So, Actually C and C++ are not garbage collecting languages.

awesome

@alexhyettdev

8 ай бұрын

Thank you!