Virtual Functions in C++

[greob]

There's no such thing as "minimal impact" in my opinion, there's impact or no impact. I'd rather avoid impact altogether. :P

[milenkopizdic]

For the newcomers, my suggestion would be to watch "stack vs heap memory in C++", "how to create/instantiate objects in c++" and "the new keyword in c++" before watching this.

[JuanPabloOrtizYax]

Brief explanation of uncovered topics (yet) in this video:
Since strings is not a primitive type of C++ we need to import the header
#include <string>
To use string without namespace std is like this:
std::string MyString("hello")
This is equivalent to:
std::string MyString = "Hello"

Pointer instances:
new keyword returns a pointer
std::string* MyString = new std::string("Hello")
And if is a pointer you access their properties with -> instead of a dot (.)
std::cout << MyString->length() << std::endl;

[luisantonioreyes]

My English captions: "my name is HMO and welcome back to my syphilis gloss series".

[raoulbrigola]

By far the best channel on youtube to learn anything about c++! Thanks a lot cherno!

[hamza.abdullah]

Guests: That's a very nice sofa, how comfy is it to sit on..?
Cherno: No, it's just for the Aesthetics, I sit on the ground.

[nilsmelchert]

Beautiful set of tutorials. Probably the best I've seen so far for any programming language. 

I also like how it is divided into the different episodes that you can watch whenever you are only interested in a specific topic.

Thank you for your time and please keep going like this!

[undeadguy]

Figured id give you a thumbs up your 30 second explanation of what a virtual function does explained what my teacher could not do in 2 hours. Appreciate it sir.

[FranciscoCrespoOM]

Most of the time I've seen a tutorial about virtual functions/vtables it works pretty well to make some diagrams on paper about how it works because it's such an abstract concept that in general people, especially newbies, find a hard time trying to understand what's happening under the hood.

[jonnyreh]

You are the best Cherno. I am visiting your c++ series regularly. Basically when I run into a concept I need to get familiar with on the go :D

[jonathangerard]

Virtual functions at first seemed harder than pointers for me... You've simplified it so elegantly... Thank you :)

[MilindNikose]

To better understand his code, go through these topics first:
1. String Class
2. Initialisation list
3. Arrow Operator
4. New keyword

[work]

This is short and beautiful, man! Please, continue doing what you do now

[TheSunscratch]

What is the difference between

Player(const std::string& name):m_name(name) {}

and

Player(const std::string& name) {
m_name = name;
}
Is it some kind of syntactic sugar?

[yugantkadu]

Please make a video on V Table and Memory allocation. I have been watching C++ playlist, your videos are very good to get concepts more clear.

[RossYlitalo]

Very nice explanation. Short and right to the point. It's easy to agree with your assessment that v-tables have such minimal cost that the inconvenience of not using them makes using them a no-brainer. Thank you very much!

[LunaFlahy]

1. Virtual function: declared in the base class, which enables the derived object to use its override function.
2. Override: declared after the function in the derived class. not required, but avoid misspelling the function name or overriding the non-virtual function in the base class.
3.V Table : stores the virtual function in the base class to dispatch, which cost space, int * pointer to the override function.
4. in specific embedded systems, using v table might impact the performance .

[michaelkane]

It is the luckiest moment in this year that i found these series right after i started learning cpp

[xbitbybit]

Haha loving the "is he going to be in focus or not?" game I'm playing watching through these videos 😂 such an epic series though mate, thanks!

[thomashaug]

Dude you are great at explaining these things. Probably won't ever see this comment but thank you. I don't write comments a lot but I am teaching myself c++ and I've watched several of your vids and they are awesome and extremely helpful. Thanks again!