References in C++ Explained 

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*sees an asterisk in code* My brain “OHHH HEEELLLLLLL NOOOOOO”

Thanks Caleb, I've been following your C++ Tutorial way back 2019 because you are a great teacher, you saved me a lot.

Commenting for Yt algorithm

Did you play the clip? 😂😂 Man I love his vids. You can't be bored to death.

Every time I have a technical interview, I watch this video again. But this time was different. Something clicked in my mind 🤯 Thanks, Caleb! I've followed you since you started the channel, and I've learned so much from you. Thanks a lot, man!

I've been struggling for weeks trying to understand this and pointers and you literally got it to click in 15mins. You're amazing, subscribed.

The fact that this guy is currently carving our way for our future just for us is priceless

Because it is very simple... which is why we need to talk about it. 😂

I didn't expect that C++ lesson on blackboard can be so good, excellent job

This is the first time any C++ concepts really started to "click". Bro, keep up the good work! Thank you for your help!

Wow, Caleb! Thank you so much for starting this series. I am in the middle of your first series of C++. That series is really awesome. I like your teaching style. You are a great teacher. I found you concluded the previous series a little short. I am delighted to see this intermediate series is started. Kindly continue this series. Your series is really helpful.

Thanks for the great explanation! I am new to C++ and needed to understand this, and also the part after 13:00 was very informative and useful!

Crazy. I was reviewing this earlier! Keep it up!

this is great. Now I got it. My prof sucks. He mixed pointer and ref and totally confused us.

You're truly the best coolest teacher i have ever seen in my life

This was a wonderful video. I'll be patiently waiting for more.

Thank you Caleb! I'm in a C++ bootcamp and your channel has taken me from failing to an A!

Thanks for this. POinters feels like a game of inception in my head. Especially when it comes to pointers to pointers

Wish I found this video sooner. After 4 hours of trying to understand this concept I finally get it haha. Thanks!

Nice, idk if you explained it really well or if after playing with references and coming back to an explanation was the final thing to make me understand this concept, but I feel like I finally get it.

Love this video, he really does explain it far better than the course material in the 300 level undergrad course I'm currently taking. Also... LEEEEEEEEROYY JENNNNNNNNKINS

Love your teaching method and your comedy sprinkled throughout! Thanks man!

Thank you for explaining the memory efficiency of references, I like to know why code is "best practise"

So basically a reference is like a desktop shortcut for an exe application.

Best caleb in the world 👍❤️

10:35 troll joke made me chuckle out loud, great video!

"But no... you just got trolled" I almost spit my coffee

This was incredibly helpful, thank you for the detailed explanations!

the way you teach is very effective and easy to understand. Thank you!

You are a great instructor.

QUESTION: 7:58 to 8:04....doesn't "int &x" at the function refer to the 'address' of 'a' rather than the 'value ' of a ( ie '5')? That is, when we call the function, aren't we passing in the "address of a" rather than the "value of a"?

You're literally the best, thank you so much!

Bravo! Thank you.

concise and clear. thanks dude

This can't be explained better than this. Top notch

so far the best explonation i could find

this is awesome! thank you so much for creating these illuminating lectures !

Bro. You're a beast. This is just what I was looking for.

After watching this video I have two things to say: 1 - thank you, your explanation is heaven sent and 2 - after your Leeroy Jenkins comment, I gotta ask. You play WoW, because if you do were gaming 😂

You make learning this like 10 times more fun, i apprecieate it!

I hate this dude when i was noob but still want to see this dude

Thank you so much ✨

This was such a great video all sorts of confusion got cleared so well. Thanks brother.

there is no love it button, so i will type. Love it, thanks a lot.

"Maybe that's a bit more depth than you need for this introductory video" Nope. Not for me, at least. That last detail you went over was super helpful. Thank you for the great video!

you make it sound easy

I got problems but I had problems with understanding reference. It seems to me like reference is sometimes treated as a memory address but then you can also treat them as normal variables. When it comes to pointers it is clear when that you always have a memory adress and if you want to see what is on that memory address, or change what is on that memory address, you deference the pointer by putting a * in front of the pointer. These references are a little bit confusing because they sometimes act as pointers and they sometimes act as normal variables. I don't see why I can't just replace references with pointers. For instance the function swap would go like this. void swap(int* a, int* b) { int temp = *a; *a = *b; *b = temp; } Also, when you use pointers as arguments of a function you know you are passing memory addresses to the function so you expect that the function might change the variables whose addresses you are passing. I find pointers more clear and understandable than references.

this video is actually fantastic, thank you so much, i appreciate your work, keep it up and good luck with everything :D

Thank you very much. God bless!!!

Wait, is this C++ series part 2

Great explanation Caleb! Awesome. Way to go!

Young and Intelligent Your the best teacher Caleb. From Ethiopia

Good tutorial. Thanks.

you explain things the best ive seen. thanks

exactly what i looking for!

Thank you! This was well detailed and clear.

I like the technique of your teaching. Really it's a great tutorial man

Great video! Exactly the explanation I was searching for

i am in love with your teaching style.

Few basic examples to remember: void work (x){return x;} // No reference void work (&x){return x;} // Argument reference void& work (x){return x;} // Function reference void& work (&x){return x;} // Argument + Function reference int& a=b; reference variable to variables int&& ref=work(x); reference from function (without reference) to variable int& ref=work(x); reference from function (with reference) to variable

Nice video. I like how you dont write any code on a computer. makes it better

Hey can you make something on typescript

Thank you for this very useful video!

I love the way that you write & diffrent in every time😂😂

Thanks Caleb.you are an amazing teacher.

just perfect ! thank you!!

Nice! Thank you for this.

Thank you well explained

your r great... such a simple and clear explantion /////

Great video, thank you man

This is a great video and I understand references and pointers now (from your other video). However, I could change the variables that were passed in as parameters even without references. For example (in C++ still because I've been learning for 2 days so far lol): void Swap(int x, int y) { int temp = x x = y y = temp } And that works fine so 🤷

Very well explained!

this is mean, reference is not a new variable refer to specific place in memory? it is the variable which it refer to??!! so this is not add on size of memory one place! right?

Dude you own.

Thanks man. You helped me a lot.

Just finished the last series and I really hope this is the start of part 2

1:41 9:40

Thanks a lot!

4:28 I actually thought all this time that this were 3 completely different things. And it's just a variation in writing.

At 13:30, what if you did like &b = &c? Would that work or can you only assign b directly and not it's address?

Well explained

This is FUN-THEN-MENTAL (fudamental)

Dude you are on fire today.

Great video!!!

Your the best bro

Helped some what keep it up

Thanks for the tips

thank you for this

IS THE USE OF "&" SAME AS WHEN YOU USE IT I EXCEL?

A reference (ref) does not occupy memory space, cannot be null, and cannot be modified. Attention!!!

Thanks Caleb

how can we use pointer to reference like this (int *& a)

Frankly it is very difficult to give my comments to anybody but you deserved highly top and your flag is great I am still can't find thanking words for long time being misunderstood.

I wish i Saw this video at the beginning of the semester😭

Thanks caleb 💛

hey beginners - if you want a simple explanation, here it is. when you name a variable, the compiler makes a table with that variable name in one column and a number in another column. the number is what you get when you use a reference. the number is an address in whatever memory space is in use - you don't have to worry about that, the linker handles physical placement. once you have the number stored, you can write to or read from memory. now, slightly more complex is that you can also do pointer math and move around in memory on your own, reading and writing things that may not have a variable name associated with them. So you can say "go to the spot where variable a is, then advance 2 bytes in memory and write a 3 there" that allows you kind of direct access to the memory space. there you go - 15 minutes saved for those of you who don't need so much hand holding.

Is there a playlist for these videos so I can watch them in order?

This is awesome !

what a mad lad