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Video tags
Subtitles
Russian
00:00:01
Okay, this is my first tutorial on a00:00:04
programming language. Yes, we made a video where00:00:06
there is some code for I usually00:00:07
just write something and without explaining the00:00:09
programming itself, what I want to do00:00:10
now is the pilots of the tutorial and if you are00:00:13
satisfied with the presentation, the depth of the narration and00:00:14
everything else, I will tell you I’ll be creating something00:00:15
for about 10 hours, I don’t know, you’ll have00:00:17
another guide How to learn a language00:00:20
that I seem to know a lot, that’s all a00:00:22
plus plus if you ask me how00:00:24
well you know with or without the Internet And00:00:27
you’re like, well, with the Internet For example, me00:00:28
I think so 35 out of 10 maybe 400:00:31
I don’t know it’s difficult to evaluate like this from the00:00:33
outside I can see better from the outside I have a lot of people on the telegram00:00:34
who know00:00:35
programming well in general and they are definitely00:00:37
watching this now I know that’s why Guys00:00:39
let’s you from the outside Estimate how00:00:41
well I understand what am I saying and is it worth00:00:43
watching at all? Okay, what does00:00:46
Real usually look like here? Yes, first of all, this00:00:48
video is about 15 minutes long. I need to00:00:49
choose some feature that I00:00:51
will now try to better go to them, something00:00:53
like that, that’s all plus for example,00:00:57
this is boring This is boring this is interesting00:01:01
Another time if you liked the option I am00:01:02
of course bored Interesting00:01:04
hackneyed in general let’s ask a question for those00:01:07
who generally ask for something find out What is the00:01:09
most hackneyed feature that is in00:01:12
these languages that annoys everyone00:01:13
that represents these languages correctly00:01:17
pointers working with memory let's go00:01:18
let me immediately mark a cool00:01:20
tutorial and try to explain everything00:01:21
I do and the main thing is why First of all,00:01:24
every practice has your favorite theory00:01:25
Yes, I will use clang for those00:01:27
who are the smallest of you this is one of the00:01:29
compilers plus most of my00:01:31
time on Windows and they have their own00:01:33
Microsoft compiler there and even there I00:01:34
switched to the clan Why Because00:01:36
exactly people are working on it. It is slowly00:01:38
probably replacing another popular00:01:39
compiler gcc and it is simply faster than00:01:42
msvc and gcc and so write to itself plus then the00:01:44
speed00:01:46
of the compiler Then what do we need to do00:01:49
like a good programmer I hope we00:01:51
still want Yes height 5 of my00:01:54
project What is cmake This is the number one00:01:55
build system for projects if I were sick00:01:57
it’s a generator of various build systems00:01:59
everything is beyond the scope of this video but that’s it But00:02:01
in short, we need Simike in order00:02:03
for our project to work and Visual Studio00:02:04
on Windows, for example, in excode on a Mac, and00:02:07
so on, cross-platform, this is a00:02:08
good start and Oh, I understand, let's maybe00:02:12
make a separate00:02:13
video on the assembly system, why,00:02:15
look in the real world, you you won’t00:02:16
write code in one file, as this00:02:18
is shown in real life, one file was written,00:02:20
we compile the program, it works, no,00:02:21
everything is wrong at all, you will use00:02:22
all sorts of touring build systems, all sorts of00:02:24
manifestos or configs, in other words, a00:02:26
continuous integration system with a kit and00:02:28
just a bunch of other sauce You00:02:30
probably already we saw how in large00:02:31
projects there are a bunch of folders of files with all sorts of00:02:33
strange conflicts and so on. And00:02:35
this is a decent share of these projects. And in00:02:38
Java it’s the same thing, only Maven with its00:02:40
build system, right from the first00:02:42
lines of the code forces you to use00:02:43
its only build system Cargo In00:02:45
general, the assembly system is cool, important and00:02:47
interesting, would you like a video tutorial likes00:02:49
comment If yes00:02:53
So we have a project where it00:02:56
generated a bunch of all sorts of files for us at all00:02:57
don’t think about it yet all you00:02:59
need to know now is that the family is this thing00:03:01
that will allow this project what they00:03:03
didn’t do in it What libraries weren’t tied to00:03:04
work on Windows and on Mac and Linux and00:03:07
I kind of tried to00:03:10
donate pointers to talk about it, but I’m trying00:03:12
guys, I’m trying very hard, I’ll try to00:03:14
somehow approach the topic smoothly, but there is what there00:03:16
is, how people in general cutting tutorials00:03:17
Just right away to the code Well, I can’t do that, sorry00:03:20
Okay, let’s move on Yes, we could just00:03:23
create a Mansi file, file its00:03:25
client class Posors and Objectnik and everything00:03:27
worked super without any beat systems yes00:03:29
yes I’m just trying to give you the00:03:32
right direction in which to dig00:03:33
Okay pointers and memory, the largest00:03:36
number of mistakes made by programmers, both00:03:38
beginners and advanced players, are00:03:39
errors when working with memory What is00:03:42
memory And we have memory in the computer00:03:44
Yes, SSD RAM registers in the processor00:03:47
is a piece of hardware, this hardware must be00:03:49
managed somehow, the operating system00:03:50
does this using complex mechanisms00:03:51
like virtual memory, how it does it,00:03:54
as if it shouldn’t concern us, it’s like you00:03:56
need to know a cool computer, all00:03:58
the things, but you don’t have to know this, more precisely,00:03:59
know only the super basics and you will00:04:01
code normally, so the hardware of00:04:02
the operating system is already at the very top,00:04:04
thoughts plus plus in which there are pointers00:04:05
and a bunch of other things, pointers are00:04:08
a mechanism or one of the features of the language that00:04:09
allows you to use memory directly,00:04:11
allocate it, free it, run through it,00:04:13
forget to free it. Why did he even00:04:16
say 20 seconds ago that you can not00:04:17
know how everything works inside00:04:18
the operating system? Because We kind of have00:04:20
our level of abstraction, we sit on it and00:04:22
all we need to know about memory is that it’s00:04:24
just such a huge piece of memory,00:04:25
to be more precise, it gives us00:04:27
the illusion that all the memory in the system is00:04:29
available to us. That is, the operating system has taken everything that’s00:04:31
ours iron This is it And she presented00:04:33
it all to us, she sees such a huge array and00:04:35
we can already do something with it like this, a00:04:37
computer for beginners in general will probably take00:04:39
a few years to write Yes, for example This is00:04:41
some kind of variable that stores00:04:42
some data for you in Python Java and so on00:04:44
further People work, plus or minus, in this00:04:46
format Despite the fact that inside Python00:04:47
and Java there are heaps of pointers, does anyone even00:04:50
know Lexus? The creator of Python recently visited him00:04:52
and just said00:04:54
that all Python is the implementation of concrete00:04:56
until noon now I quote approximately00:04:57
I quote there we have a bunch of pointers of00:04:59
pointers to pointers and so on, but00:05:01
now we’ll try to understand how it all00:05:03
works there. Okay, the variable contains00:05:05
data and approximately there are types name00:05:07
data can be of different types they are00:05:09
called that Yes and taps data types integers00:05:11
numbers dot letters strings numbers00:05:13
can also be of different sizes in general00:05:15
It’s easier to say that there are a bunch of types for00:05:17
any data, and if there is no type,00:05:18
then you create it yourself. Easy, now we can00:05:21
compile and run the program, then we00:05:22
will simultaneously have an int in which there00:05:24
is some number the size of int 4 or 800:05:26
bytes, depending on the architecture of the stone,00:05:28
now almost everywhere is00:05:30
864 bits, and you generally have a question in your head00:05:33
like where is this int in memory? It00:05:35
must be somewhere, like we launched the00:05:37
program and there is some kind of memory already00:05:38
given automatically That’s right, if00:05:40
you look at the size of our executable file, then there’s00:05:42
definitely something in it. It’s clearly more00:05:44
than four or eight bytes. They asked for00:05:46
nothing. The program somehow allocated 800:05:47
bytes somewhere; it stores them somewhere; this number is00:05:49
inside this entire size. Yes, for00:05:52
example, you can say there is some kind of00:05:54
data type that is highlighted by itself or the00:05:56
Main function This is close but no00:05:58
Well done when we compile and take the00:06:00
program It is assembled into some kind of00:06:01
integral piece that you can click and00:06:03
it will start and Yes yes I know that there00:06:06
you can collect not in the executable file of the library00:06:07
for those of you, it’s fumbling around. Guys, I’m00:06:09
just trying to teach the little ones now,00:06:10
it’s very difficult. Believe me, I’m trying to00:06:12
say only the most important things for00:06:14
understanding at least pointers, so00:06:16
this very piece or execury that00:06:18
we get at the output consists of00:06:19
there are just a lot of several parts of them, but the00:06:22
most important thing is that there are segments for00:06:23
storing different types of data from your00:06:25
program, not data types, but specifically types, I do00:06:27
n’t know, maybe00:06:28
I chose the wrong word, but now I’ll try to00:06:29
explain the word type here, I use it as a00:06:31
designation of what type of storage the00:06:33
original storage variable, for example, is there. So00:06:36
where is our variable stored? That00:06:38
is, this is local data, a local type of00:06:39
storage, the size of the stack is about 2 MB of fold, but00:06:42
it can be expanded, of course,00:06:43
there is also a part for storing our00:06:45
compiled code, this is the part00:06:48
for storing global and static00:06:49
variables For example, if I create a00:06:51
variable in the global visibility zone outside00:06:52
the function, it will be in its segment the00:06:55
same for static data and the most00:06:56
interesting video on the topic. Yes, in the executable file00:06:58
there is also such a thing as heap or heap and00:07:00
here heap is a memory that grows00:07:03
during runtime and in theory without00:07:04
fragmentation If you select everything beautifully and00:07:06
competently, the operating system goes to meet you00:07:07
halfway You can borrow from the00:07:09
system's memory The rest of the hip chip it grows00:07:11
dynamic, that is, during runtimes it00:07:12
was carried out on the remaining segments00:07:14
too But the hip Yes, we00:07:16
usually don’t even know the dynamics during00:07:17
program compilation How much we00:07:19
will allocate memory there, so hip is00:07:20
dynamic memory from there and the name00:07:22
So the theory seems to be how we all start with00:07:24
audible indicators, this is our00:07:25
in variable with some data And this is indexical,00:07:27
this is a variable syntax such that we00:07:29
decorate the type manager of this asterisk and00:07:31
get a pointer to intemper Sand This is00:07:33
the address of the variables in which the data lies, the00:07:34
same applies to links, links,00:07:36
you know, syntactic sugar for00:07:38
pointers, family differences, all this is00:07:39
boring, a whole bunch of times, this has already been seen in00:07:41
reality with pointers. People work.00:07:42
Otherwise, I don’t want to waste time now00:07:44
explaining what pointers there, I don’t00:07:46
know, you can pass parameters to a function00:07:47
pointers can be constants, both the00:07:49
pointers themselves and the data they00:07:51
point to functions can return00:07:52
pointers, in general, it’s just a superbase,00:07:54
which you can look at somewhere00:07:56
else, since there are resources in the heap, I’ll00:07:57
add something in the description Well, or00:07:59
if you need my explanation, then like00:08:01
this video until we say 20,000 likes so that00:08:04
I can post a 10-hour tutorial on00:08:05
modern plus. But for now, let’s talk about00:08:08
something more or less real, but before00:08:10
that I have a question guys: How often do you00:08:12
use VPN and use In general,00:08:14
one of the projects that hangs on my00:08:16
sheet is to write a VPN, for00:08:17
example, I don’t know, this00:08:19
guy did it Why? Good question You’re just for the sake of00:08:21
experimentation, like all the projects on this00:08:22
channel in general, but if we talk about some00:08:24
ready-made solutions, then the guys from sherk00:08:27
They offer an excellent option sor sherke00:08:29
to this, a platform VPN service that00:08:30
solves all the problems that a00:08:31
good PN should solve, for example, the most important one00:08:34
is super secure Surfing the Internet,00:08:35
fur under the hood is as frizz-00:08:37
free as possible, such encryption with00:08:39
all sorts of discrete logarithms, and00:08:41
that’s all for those who, say,00:08:42
use public Wi-Fi plus00:08:43
he buys something else there through these wi-fi VPNs, this is an00:08:45
absolutely obligatory attribute, or if you00:08:47
want to be the target of all sorts of marketers00:08:49
in advertising and they say in short, in00:08:50
general, you don’t want to become part of this very00:08:52
big data, analyzes the Party for developers,00:08:54
then 40 is what you need all this works00:08:57
with one subscription on all platforms, this is00:08:58
one of the valuable features of the guys, also plus you00:09:01
get a few more interesting00:09:02
goodies, such as multihop Or that00:09:04
same double VPN that Vanya sings,00:09:06
quoting you won’t find me, I’m like a double00:09:08
VPN Yes, in general, all this and a lot other00:09:11
possibilities will be yours through the link in the00:09:12
description And of course, my promotional code00:09:14
Winter will give you 85 percent and three00:09:16
free months to test it yourself So00:09:19
a pointer to an int that lies on the stack is00:09:21
cool, but it’s too simple we00:09:23
allocate no memory int lies in the stack00:09:25
frame of the function main we just create00:09:27
pointers we refer to this very same how to00:09:29
allocate memory dynamically This00:09:31
itself has its own tools for this00:09:32
Yes, namely popular00:09:34
locators or allocators in Russian the first00:09:36
predatory small general purpose locator00:09:38
that allocates 10 kilobytes as 1000:09:39
gigabytes old predatory functions we want to00:09:42
allocate for example, like this, by the way, this00:09:45
function is small for large offices, everyone has their00:09:47
own Google, there are all sorts of Yandex and the00:09:49
like, there is a widespread opinion00:09:51
that the chalk allocates both 10 KB and 1000:09:53
gigabytes of the same type, a general-00:09:55
purpose locator, remember this fake info for me00:09:57
If I find proofs But I definitely saw how00:09:59
inside some hype implementation of00:10:00
chalk there were setups of approximately the following00:10:02
nature. For example, if we allocate00:10:04
small memory, for example 100 kilobytes,00:10:06
allocate no more than a megabyte in one algorithm,00:10:08
in another way no more than 1000:10:09
megabytes in the Third, and so on. That is, at00:10:11
least it is general-purpose for some00:10:13
optimizations it’s still present there00:10:14
Yes, and in general, a lot of things work slowly00:10:16
in fact. If you think about it,00:10:18
there was a hashtey if it’s present, but this one is00:10:19
somewhat slow, there are a lot of00:10:22
tests on how a custom map outperforms00:10:24
this stl version simply many times over. Why wo00:10:25
n’t it change to the standard? You Ask00:10:27
Yes, because there’s already a lot of commercial00:10:29
code written there, and not just commercial code,00:10:31
but I don’t know, for example, in all sorts of companies like00:10:33
Boeing, where the safety of00:10:35
people is so important, and I’m generally not sure about the infection, but00:10:37
it seems like in some airline they’re even00:10:39
afraid to update the compiler Because00:10:40
life people are more important than some kind of00:10:42
performance boost, so they are sitting who00:10:45
have not been updated for 10 years, in short, a00:10:46
digression is enough Yes, we allocate the memory, then00:10:48
we check whether it was allocated, you always00:10:50
do this, if it is not allocated, then the chalk00:10:52
will return you not a pointer to the memory that you00:10:53
asked for, but the analyst then some00:10:55
data we put it there and output it and at00:10:58
the end we simply delete the memory behind us. This is the00:10:59
most important thing that you need to do:00:11:00
standard Flow with chalk and the code that00:11:03
you write in the first week of studying Sim And00:11:04
now c++ everything plus, instead of chalk we00:11:07
have the New operator, this is everything plus00:11:09
plus operators which allocates00:11:10
memory inside it, calls the same00:11:12
crayon plus the object constructor if the type is00:11:13
more complex, it calls the destructor00:11:15
accordingly, for example, what it looks like, I don’t00:11:17
know the class constructor instructor00:11:20
new shares and you see everything yourself skills00:11:23
None of this does you00:11:24
the constructor needs to be called manually also00:11:26
if you couldn’t allocate memory, it throws00:11:28
an exception because there are already exceptions in the pluses,00:11:30
all of them were missing details such00:11:32
mines Yes, maybe I’ll remember, I don’t know, you00:11:34
’ll need this someday, in general, let’s00:11:35
allocate a lot of memory on the heap and00:11:37
see what happens to the system, an00:11:38
endless loop inside which00:11:40
we allocate memory and do something with it00:11:41
in another loop, if you don’t00:11:44
do this, just select Memory, then00:11:45
nothing will come up with the compiler even if it’s 0, I don’t00:11:48
know, in my opinion they use00:11:49
code that essentially has no semantics with00:11:51
it again, it doesn’t throw00:11:53
an exception here if It’s not possible to allocate00:11:55
memory, so this code needs to be00:11:56
wrapped in triples and processed by00:11:58
bedalok But it’s okay Yes, we run the00:12:00
exception against the men ourselves, we check00:12:03
and so we see What happens we allocate00:12:06
gigabytes of memory, my 32 GB of RAM is00:12:07
quickly depleted and00:12:09
this is the mechanism of the operating system that starts working when00:12:11
it drops unused pages onto the00:12:13
hard drive from the RAM and then, if00:12:14
necessary, returns them back and00:12:16
other drops Why Because you, of course,00:12:17
can only have a couple of runs of data00:12:19
at most And these gigabytes still wo00:12:21
n’t fit there The same thing about the RAM,00:12:22
access to the frame is so slow therefore, even00:12:24
if you access it, you pull00:12:26
even in small chunks.00:12:28
Therefore, if you have a couple of gigs allocated, then00:12:31
you can easily swap them from the RAM00:12:33
for other applications, damn there’s so much I00:12:34
want to tell you, but there’s so00:12:37
little time you need to call00:12:39
share you call Well, I intend not to00:12:40
do this to show what is happening And00:12:43
so I’m trying to explain and try to be a00:12:46
good teacher on Guys, I adhere to00:12:48
the paradigm that if you teach the pros, then00:12:49
you need to know everything that is happening now, but00:12:51
it’s impossible otherwise You agree with me00:12:52
so many cool damn guys are watching me00:12:54
I’m really proud of you Subscribe cart00:12:56
and I’m still trying to talk about the pointers Well, I00:12:58
just can’t get to the00:13:00
pointers themselves and how do you like this00:13:01
approach to teaching in general? Let’s do a pool00:13:04
tutorial Thanks plus or no So Okay, the00:13:06
chalk highlights the memory of this the pointer itself,00:13:09
the pointer itself lies on the drain in this00:13:10
situation, we allocate memory on the heap, but it also00:13:13
allocates memory, but almost from00:13:15
constructors And exceptions in general New00:13:17
supersave This is a direct operator That is,00:13:19
if somewhere something was not allocated before it was not00:13:20
volunteered, then it will not allow anything to leak00:13:22
Well, Fried frees himself, now00:13:25
we know the basis well and another00:13:27
interesting point in terms of memory is00:13:28
that pointers are under a feature00:13:30
called pointer arithmetic,00:13:31
with the help of it we can jump through the00:13:33
allocated memory for All from one,00:13:35
for example, we select the memory of 1000 screws, this is a00:13:38
pointer to these 1,000 screws and we can00:13:40
now add and subtract numbers to this pointer00:13:42
To jump around the array00:13:43
That is, if 95 initially the pointer for the00:13:46
beginning of the array will point to 5 times the00:13:47
size of the pointer type, that00:13:50
is, either 4 or 8, respectively 500:13:52
The element is thus moving through the00:13:53
allocated memory to any element,00:13:55
constant or as fast as possible, there are00:13:56
only two assem instructions. By the way, in order to00:13:58
see the result of what lies somewhere in00:14:00
memory, you need to dereference the pointer,00:14:02
otherwise the address of the element will be displayed. The00:14:04
beauty of the general advantage is that00:14:06
you can even knock on those places in memory that are00:14:08
supposedly not ours indefinite Behavior00:14:09
from b that is, it can learn anything it’s both a00:14:12
gift and a curse at the same time the main00:14:14
feature why this can be done is00:14:16
speed by itself since some00:14:18
constantly checks the boundaries of arrays00:14:20
When you access elements if00:14:21
plus doesn’t do this at all here by the way00:14:23
now it happens exactly the same00:14:24
story Okay, it was memory allocation,00:14:26
freeing and the so-called rockpoint00:14:28
or pointers, but all plus we have00:14:31
something else that migrated to standards from00:14:33
boost, like many other features smart00:14:35
pointers, right, what’s the difference between00:14:37
serial pointers and smart ones in general00:14:39
First of all, there is enough difference. There is00:14:41
almost no speed. Smart pointers are the same00:14:43
Fast as raw ones, and the most important thing is that00:14:45
smart pointers have a feature that00:14:46
automatically cleans up memory. This is a00:14:48
very important point. There are several types of00:14:50
smart pointers in total. And the main00:14:51
concept of using smart00:14:52
pointers is superior to raw ones. from such a00:14:55
concept plus, how it expands the ownership of00:14:57
some resource, which in turn00:14:59
comes from a more fundamental concept00:15:00
plus, which is called Rai, an abbreviation00:15:03
that means nothing like lvm, but00:15:05
the meaning is not that the first letters there00:15:07
mean a resource, a resource can be00:15:09
absolutely anything for example, a socket was opened00:15:11
and not closed. Here, a socket is a resource00:15:13
that the indicator would close behind00:15:14
itself depending on where these00:15:16
resources are and who else has access to it.00:15:18
Exactly similar resources00:15:20
are meant when we talk about00:15:21
transferring ownership of resources in many00:15:23
pointers Yes, all of this It sounds super00:15:25
complicated, I understand and you can’t just go and00:15:26
talk about smart pointers right away. Or maybe it’s00:15:28
possible. I don’t know, I’m just racing. In general, I00:15:31
actually planned to talk00:15:32
about smart pointers and also wanted to have time to00:15:34
write my own and show how they00:15:35
work because that’s the best way understand00:15:37
something works write it yourself Yes,00:15:39
but you can see the timings of the guys I00:15:41
just don’t have time for this video anymore The pilot00:15:43
is repeating himself, I did the lessons thanks plus00:15:45
maybe only indirect and It’s important for me to00:15:47
understand Do you need it if you like00:15:50
all this And you need a video of the clock on 5-1000:15:52
where I will chew everything that we00:15:53
started to feel here, put your likes Thank you,00:15:55
they listened to me only goodDescription:
Переходи по ссылке https://surfshark.com/deal/influencer?coupon=partnerspecial используй промокод WINDERTON и получи скидку 85% и 3 месяца в подарок! А вот видео по системам сборки: https://www.youtube.com/watch?v=CCBH8UQHCW4 В общем, смысл такой: В сети куча туториалов по С++, а я делаю еще один. Зачем? Спасибо что спросили. Какой ваш любимый актер, кто сыграл Бетмена? Клуни? Бейл? Патинсон? Афлек? Тут тоже самое. Одна и та же тема, покрывается разными людьми, и я так же решил попробовать "сыграть Бетмена". ps: читаю сижу эту аналогию, и хочу удалить ее чтобы не позориться, но не буду. Приятного просмотра! Я wndtn, мне 20 c чем-то лет, и я изучаю computer science и программирую ~10 лет. Я into С++, и всякие low-level штуки. У меня есть небольшой проект, xplatform, который вы сможете найти на github, и через него практиковаться в изучении всей базы программирования, и если вам повезет(если вы упорный), вы станете хорошим программистом %) Если нужна помощь в программировании 1 на 1, чекайте ссылки . всем добра Телега - https://t.me/wndtn ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Фридман и Россум - https://www.youtube.com/watch?v=TLhRuZ9cJWc Где учить C++? По Майерсу, Александреску, Саттеру, Тёрнеру. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Подпишись сюда, бро: Telega и чатик - https://t.me/wndtn Boosty(менторинг) - https://boosty.to/wndtn Instagram - https://www.facebook.com/unsupportedbrowser Github проекта(код с канала) - https://github.com/winderton ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Оборудование: Камера - Sony a7ii Объектив - SIgma F1.4 DG Микрофон - AudioTechnica at2035 Звуковая карта - Scarlett Solo Петличка - Rode smartlav+ Клавиатура - HyperX Alloy Вторая клавиатура - apple magic keyboard(black edition) Монитор DELL 25' Монитор Asus mg248q Iphone 11 pro(зеленый) CAMLINK elgato - для стриминга JBL headset ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Музыка: puar - in the rough Jeff Caddoni - So many meanings
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