Casting in C++ 

He is the only C++ programmer who does not use a mac? It should not matter anyway :)

@@groberti It does matter once you get into platform specific implementations. Obviously someone in a mac won't use things like the Win32 or DirectX / Direct3D (well not officially anyways). But yeah, for this topic specifically it doesn't matter.

@@lukedk4614 Well, obviously. Or you could use a cross-platform framework (like OpenGL) and then it does not matter as much. The op is not explicit enough btw, are most other people who teach C++ use Mac or do programmers in general? I do think that the Mac is the most convenient platform if you are developing "platform independent" things or if you're developing for the Mac. Or even if you are developing for multiple platforms, but then you'll need another computer with Windows / Linux as well anyway

@@groberti He's not the only one that doesn’t use a MacBook. Lots of people dont use them. For me, they are simply too expensive. But I use both Windows and Linux all the time. Now, for the bleeding edge, Linux is the one that gets features first for my languages, such as PNF.

@@groberti he's a game developer and the game he develops run on windows not mac or linux, so obviously he will use Visual Studio on Windows

Can't agree more!

valuable library indeed !

Some people explain in a very gate-keeper type of way :( Really glad people like him exist!

lovely!

no const_cast?

5. Const cast - C++ style 12:03 6. Reinterpret cast - C++ style 12:24

@Ameer Leonel BOT

@Jon Anderson bot?

@@hammielover225 Yes these always come in pairs, one claims to hack his gf's/sister's Instagram, and the other says he'll try it out.

@@fppt1555 I know that

I don't think that those topics are C++ specific. It would be nice to have a new Cherno series dedicated to that but those topics would not fit into this C++ course imho

He is right, it is C++ specific since many design patterns cannot be applied directly to c++ since they heavily use concepts introduced in higher level languages

Those aren't things you would usually ask a game programmer. Games are not like many other large projects in this respect, often due to performance targets. Many of these patterns are really geared towards what I will call corporate code... where the assumption is that everyone else using your code is a moron that will ignore comments and abuse absolutely anything that can be abused and in the worst ways possible. Not to say that games don't have any overarching structure, they do. How do I put this though, it's not that they don't have design patterns, but they have different design patterns and they aren't patterns that most proponents of design patterns would approve of. Cherno's videos are good and necessary. Tales of the horse's demise are greatly exaggerated. He's pretty much the only person talking about these things on RU-vid that can actually convey them to an audience. He's the only one doing C++ videos that makes me feel like I'm back in my university courses listening to my prof rather than to some moron that either doesn't themselves know what they're talking about or with such poor communication skills that the only people that know what they're talking about are people that already knew the subject matter. Go watch some C++ con vids, none of them seem to be able to define lvalues and rvalues in a way that anyone that didn't already know them can understand. Watch Cherno a few minutes and it makes perfect sense.

@Over Yonder I'm sorry to hear that your university experience was so terrible. At the time when I attended the university I went to, their computer science and computer engineering undergraduate programs were incredibly intensive.

Oh I think you over state the case against going to university a bit. I can appreciate the sentiment, and you might be right when it comes to learning some particular programming language or something, but the engineering pro school I went through took me through big thick advanced textbooks on math, physics, chemistry, things like quantum mechanics and semiconductor physics. Power dynamics, signals and systems, properties of materials.. Things like calculus based discrete math that describe systems for proving (or disproving) the correctness of algorithms.. Electronics and micro electronics.. I built and programmed embedded systems in machine language, assembler, and then C.. advanced concepts in computer architecture.. I designed and simulated the operation of a microprocessor and used equipment whose output could be put into other equipment that would actually manufacture it.. It took me through the advanced details of operating system internals.. All kinds of things. Way too much to even list. I started with 1,000 peers and graduated with 100. Literally 90% washed out! I am probably upwards of the 96th percentile in terms of intelligence, and I found the program to be very challenging. I would never have learned all that stuff on my own, and I don't think I've really found on-line resources that nearly match all that. I still have a small book shelf full of the those big thick advanced textbooks. To me, the online materials I've come across seem more geared toward people with much closer to average intelligence than that of the audience targeted by my university textbooks. Not that you necessarily need all that stuff just to be a programmer, but. I would say that it doesn't hurt. My perception is that the vast majority of programmers I come across who don't have the kind of education background I have don't really think on same the level that I do. Even the ones who I would guess are actually a little smarter than I am. But again, all that said, I do think when it comes to learning about some particular programming language, you might be right that some online resources, like this one, rival or even do better than 1st or 2nd year university courses.

It's faster at compile time, not when actually running

@@theshermantanker7043 difference???

@@ataladin87 it will compile faster but when you run it, c style would be faster.

Because you will have to search for all datatypes like that? In case of C++ style cast you will just need to search for 4 types at max.

Just use vim

I think Cherno made a really good video explaining pointers

The thing you forgot is this is CPP. Ok i will agree that's cringy. For tips I'm a newbie so I'll just recommend you watch all his vids on cpp and others too. Dont take my word for it though.

Nikola Kostić Thank you very very much for that detailed answer! I appreciate it, sorry if this was too much, I come from high level languages so the concept of pointers and low level stuff is pretty confusing, I tried googling questions and I actually found answers, but still the concept was pretty hard to grasp. Thanks a lot for your time :)

I would suggest a book called Effective C++. Its really good

The idea behind pointers isn't really a new concept. Think about everyday interactions. Let say that your love one like a grandma wants to give you a present. One way is to visit you directly and give you the present. This is sending you a value directly. But what if I she cannot directly visit you? The next way is sending it via mail or by some address. This is exactly what pointer does. A pointer is a variable which holds data that is the address of something. Your grandma probably has and address book that holds this information and other things like maybe a birthday tracker or planner. The idea is to be able to store a reference to some location becomes key in computing. Some things can not be loaded all at once on a computer, so knowing where it is located becomes very important. The heap vs stack is away to address this problem by having some promises that at least this much information can be seen at once. Later on you will come to see that certain things do not physically exist as limitation but are abstracted ideas that are imposed on the system of computing.

What makes you use C++ so long?

@@ahmedbugti3152 It's just the language I'm most comfortable with. It's also very powerful, versatile and (next to C) de facto industry standard in many areas of software design.

Hey man are you in Cherno discord server? come join us.

Pooria GH I just created my acc on discord, aaaand seems like i’ve been missing this one. 👌

Yes! Good idea

What is that?

for dynamic, you need RTTI

That's "cust".

I guess because malloc returns a (void *) , also malloc does not know for which type we are allocating memory for so we have to cast it back ( size is provided using sizeof(type) , in your case its sizeof(char))

I know how you use malloc to allocate sizes and so on, just didn't get the casting.

+Vali Zeth - C++ has more type safety than "C". "C" doesn't care what type you assign a void pointer (void*) to, so you could assign a void pointer to anything without it caring, but C++'s extra type safety needs you to explicitly tell the compiler what type you want the void pointer casted to, because a void pointer is a pointer to anything (unknown type)...

One thing I still haven't gotten though is why pointers are of type void. A pointer returns a memory address of an object / variable. The address is still a value though, void = emptiness. So how can it return an adress and yet nothing at the same time?

+Vali Zeth - A void pointer is just a RAW Address. It is basically like saying, that whatever receives this pointer can treat the memory space at that address as any type it would like. So if I cast a void* to a char* ("char* ptr = (char*)malloc(10)"), I'm just telling the compiler that i want to either read or write to this address as the value type of "char" (1 byte data type). I could also say I can cast the void* to a int* ("int* ptr = (int*)malloc(10)"), I'm telling the compiler that I want to either read or write to this address as a value type "int" ( 4 byte data type) So as you can see, i can treat a void* as anything I want due to the fact that the compiler doesn't actually know what is at that address because it is a pointer to an "Unknown data type" (void*)...

Bextract YOTE 🤔😥😥

yee