@programminginc - страница 608

Anonymous

i need some youtube meme vim

Emacs can't run Youtube

klimi

hm

klimi

it can actually

Anonymous

it can actually

Yeah, but I am too lazy to set it up

klimi

yep

Mat

Oh ok, so only those parts matter where C++ is doing better :)

Are you comparing C and C++ using printf and cout?

Mat

Holly C++

Are you using endl or "\n"?

Anonymous

Are you using endl or "\n"?

std :: endl;

Mat

std :: endl;

#noendl

Marie

std :: endl;

https://m.youtube.com/watch?v=6WeEMlmrfOI https://m.youtube.com/watch?v=GMqQOEZYVJQ

Anonymous

Are you comparing C and C++ using printf and cout?

Well, otherwise no reason to compre

Mat

Well, otherwise no reason to compre

?

Ибраги́м

Apart if your system have far and short pointers

This supposed to be nonexistent before Maxi's arrival to this world, right?

Jussi

\n doesnt flush the output always afaik

Mat

Compare C and C++ on a real programme, not hello world... and it's not only a matter of execution speed

Anonymous

Compare C and C++ on a real programme, not hello world... and it's not only a matter of execution speed

That's will be hell a lot of optimization from compiler side

BinaryByter

Holly C++

complain to gcc, this should NOT be possible according to stroustrupp (remove the endl though)

Ludovic 'Archivist'

This supposed to be nonexistent before Maxi's arrival to this world, right?

Yeah

BinaryByter

Yet @linuxer4fun told us many times that c++ compilers are the future

shhh may I tell you a secret? cout and printf work differently.

BinaryByter

This supposed to be nonexistent before Maxi's arrival to this world, right?

Eyh! not cool!

Anonymous

complain to gcc, this should NOT be possible according to stroustrupp (remove the endl though)

I use clang, which generates friendly error messages in cost of extra stuffs

Anonymous

shhh may I tell you a secret? cout and printf work differently.

cout is way high level

BinaryByter

Yet @linuxer4fun told us many times that c++ compilers are the future

btw: both sides use the same compiler

BinaryByter

the same C++ compiler

BinaryByter

will you please grow up and stop being a stupid guy who sees a black thing and instantly cries "elefant"?

Ludovic 'Archivist'

Well, I guess future cpus have 6x clock speeds so they can execute as fast as old C code on a legacy processor

Printf is slower than executing a std::cout's <<

Anonymous

Printf is slower than executing a std::cout's <<

Real programmer use puts xD

Ludovic 'Archivist'

Holly C++

And the equivalent C code should as mentioned use flush() too

Anonymous

And the equivalent C code should as mentioned use flush() too

Still generates too much stuff I guess

Ludovic 'Archivist'

Still generates too much stuff I guess

Mostly initialization information

BinaryByter

Mostly initialization information

add optimization flags

Anonymous

Ludovic 'Archivist'

Still generates too much stuff I guess

The second part is the atexit handler to print if it crashed with a known error

Anonymous

The second part is the atexit handler to print if it crashed with a known error

It's like "Let me hold your hand in case you screw up kid?"

Anonymous

I maybe wrong though

Ludovic 'Archivist'

It's like "Let me hold your hand in case you screw up kid?"

You can disable it easily

Ludovic 'Archivist'

But it is useful on non embedded platforms

Anonymous

You can disable it easily

How to generate very less footprint via c++ ?

Ludovic 'Archivist'

How to generate very less footprint via c++ ?

-0s -no-rtti are a start

Anonymous

-0s -no-rtti are a start

what exactly that flag means?

Ludovic 'Archivist'

First means minimize code size, second disable runtime type information

BinaryByter

-0s -no-rtti are a start

it's -fno-rtti btw

klimi

hi

Ludovic 'Archivist'

it's -fno-rtti btw

You are right

klimi

LUdoooo

klimi

こんばんは

Ludovic 'Archivist'

こんばんは

こんばんはクリミくん

klimi

こんばんはクリミくん

天気は厚い出羽ありませんか

Anonymous

it's -fno-rtti btw

seems not working?

BinaryByter

こんばんはクリミくん

konbanwa!

BinaryByter

seems not working?

it's better than the initial one

BinaryByter

add -0s

Anonymous

it's better than the initial one

what? Can I stript it more?

Ибраги́м

Oh ok, so only those parts matter where C++ is doing better :)

Have u seen fmtlib? I still stand by my line: when there's a usable C++ compiler, no reason for me to use C.

BinaryByter

what? Can I stript it more?

ignore all the ones that start with a . btw

Ludovic 'Archivist'

seems not working?

Also, it will not remove metadata, this is to be removed by stripping the binary

BinaryByter

they are just informations for the assembler

Anonymous

add -0s

Now it's like this

Anonymous

I am sure there might be a way to strip into this level

BinaryByter

let godbolt strip for ya

Ибраги́м

Pure C++ level optimization right here

std::cout. Go check fmtlib

Ибраги́м

fmt::print vs std::cout

Ибраги́м

Anonymous

Yeah, this is what I wanted

Anonymous

Thanks :)

Ибраги́м

Thanks :)

Playground: https://gcc.godbolt.org/z/GwqL9K

Anonymous

There might be some limitations I guess

Anonymous

Playground: https://gcc.godbolt.org/z/GwqL9K

Good good, this is what I wanted

Ибраги́м

To be fair to C, printf does this in 10 instructions but u gain the ability to eaily blow up yourself with no point of return.

Anonymous

To be fair to C, printf does this in 10 instructions but u gain the ability to eaily blow up yourself with no point of return.

well, that's how people should learn, IMO

BinaryByter

well, that's how people should learn, IMO

no

BinaryByter

it's like at school

Anonymous

no

Yes

BinaryByter

you are thaught pseudo-wrong stuff

BinaryByter

that somehow works

BinaryByter

but in the end it just ingrains bad habits

Anonymous

I like risky life xD

Anonymous

Full of thrill xD

Ибраги́м

well, that's how people should learn, IMO

To blow up themselves easily ?