@programminginc - страница 1958

Bennie

You say that but it appears you are a complete ignorant of the goal of cv qualifiers

Note to self - dont feed the trolls

Ludovic 'Archivist'

I've worked 26 years on c/c++ - no need for the std

Also "no need for the std" guess what, you seem pretty outdated on it

Ludovic 'Archivist'

You say that but it appears you are a complete ignorant of the goal of cv qualifiers

To grab the very word of 1.9: "Access to volatile objects are evaluated strictly according to the rules of the abstract machine."

Ludovic 'Archivist'

To grab the very word of 1.9: "Access to volatile objects are evaluated strictly according to the rules of the abstract machine."

And "When a call to a library I/O function returns or an access to a volatile object is evaluated the side effect is considered complete, even though some external actions implied by the call (such as the I/O itself) or by the volatile access may not have completed."

Bennie

To grab the very word of 1.9: "Access to volatile objects are evaluated strictly according to the rules of the abstract machine."

My original point was do not use something to show off or be cool, you will only trip up yourself. Be clear to any developer why you did it. That way your code and you will last, otherwise you only end up losing your job, your code will be replaced in a heartbeat by maintainable code.

Ludovic 'Archivist'

And "When a call to a library I/O function returns or an access to a volatile object is evaluated the side effect is considered complete, even though some external actions implied by the call (such as the I/O itself) or by the volatile access may not have completed."

Those are all of the guarantees of volatile along with "The implementation may assume at any point another thread may access a volatile object"

Ludovic 'Archivist'

My original point was do not use something to show off or be cool, you will only trip up yourself. Be clear to any developer why you did it. That way your code and you will last, otherwise you only end up losing your job, your code will be replaced in a heartbeat by maintainable code.

And that was what I was very exactly saying and that was exactly what the code you were picking on was demonstrating, hence the reason I pointed you had not read what you were commenting on

Ludovic 'Archivist'

I've worked 26 years on c/c++ - no need for the std

Also, appealing to years of practice to demonstrate knowledge is a way of showing you are too lazy to keep on studying your topic. When a doctor does that, they kill or fuck up people's lifes

Bennie

And that was what I was very exactly saying and that was exactly what the code you were picking on was demonstrating, hence the reason I pointed you had not read what you were commenting on

Use const for const, not volatile for const... my point... sorry that I dared to answered something you're an "expert" on.

Ludovic 'Archivist'

Use const for const, not volatile for const... my point... sorry that I dared to answered something you're an "expert" on.

I never used volatile for const, I used a volatile return value, which does nothing, to present the kind of code that is bad, and labeled it as such right around the place you commented, and never meant to use const because const does have an effect there

Ludovic 'Archivist'

Use const for const, not volatile for const... my point... sorry that I dared to answered something you're an "expert" on.

Also, I would advise not putting a label on people at your convenience, be it pro or joe, as well as not behaving like a child when you make a mistake and use it to learn. I get not wanting to read a whole thread of discussion because it takes time, but when someone points out your laziness, taking an uncooperative stance doesn't make things better

Anonymous

Well.. that was.. interesting

Z

The group specializes in programming c??

Anonymous

The group specializes in programming c??

Have you read the rules?!

klimi

The group specializes in programming c??

you can guess

Z

Have you read the rules?!

Yup

Anonymous

Yup

I don't think so

Z

I know that a special set of programming language c and c ++

Anonymous

I know that a special set of programming language c and c ++

Wat

Z

But ask do you know other programming languages?

Anonymous

But ask do you know other programming languages?

Why do you need to know that?

Z

Why do you need to know that?

nothing

Z

you can guess

Why?🤔

klimi

Why?🤔

dont

Augmented

hi, friends, i need an ISR to call a class member, but i prefer not to use static functions and global instance pointers... i want everything to stay encapsulated within the class... however in arduino framework attachInterrupt can't assign an ISR vector to non-static class members... Is there any genuine c++ workarround?

Anonymous

std::mem_fn may be what you're looking for, not sure if there's a more modern way to do it

Jussi

Yep, std::mem_fn

Augmented

thanks, is it a wrapper for instance::member? I tested few variants with binding, but no luck so far

ajay

Hello world😁😁

Anonymous

Anyone know. Java

shiv

Got this as a warning

András

Show me your code

Artöm

-std=c++11

Artöm

And maybe include initializer_list

Anonymous

Anyone know. Java

/warn no

kr4T0X

I'll be back.😊

Dark

/what is the problem with this code of array rotation

Artöm

Rename this

Artöm

All things except first, i and j are unclear

András

All things except first, i and j are unclear

k too

Artöm

K is useless here, reuse j

András

instead of int a, b, c, ... Make this Int a; Ibt b; Int c; ...

Artöm

Problem is, you dont understand what your d is for

Dark

output is okay but its not in order

András

K is useless here, reuse j

Oh, yes

Artöm

Problem is, you dont understand what your d is for

No, youre correct, no problem

Artöm

output is okay but its not in order

As it should be. Just add spaces

András

output is okay but its not in order

For(int i = 0; ...)

Dark

Artöm

Line 27, add space

Dark

thankyou

Dark

it was a mistake

Dark

😊😊

Dark

how to remove this

Anonymous

how to remove this

It's simple Write code that works

Artöm

how to remove this

Debug it

klimi

It's simple Write code that works

Lol

Yaser

Cppcodeprovider for visual studio 2019

András

It's simple Write code that works

But nobody knows what it does😂😂

Ritu Raj

how to remove this

Can you send full code?

Anonymous

Can anyone point out what's the mistake in my code snippet? struct node{ int dist = -1; int m[3][3] = {0}; node(int d){ dist = d; } }; bool comp(node &a, node &b){ return a.dist <= b.dist; } priority_queue<node, vector<node>, comp> q;

Artöm

Can anyone point out what's the mistake in my code snippet? struct node{ int dist = -1; int m[3][3] = {0}; node(int d){ dist = d; } }; bool comp(node &a, node &b){ return a.dist <= b.dist; } priority_queue<node, vector<node>, comp> q;

I guess you must provide comp in ctor if its not a default one

Artöm

And not comp, but decltype(comp), since you need to pass a type

Artöm

priority_queue<node, vector<node>, decltype(comp)> q(comp);

Anonymous

Can anyone point out what's the mistake in my code snippet? struct node{ int dist = -1; int m[3][3] = {0}; node(int d){ dist = d; } }; bool comp(node &a, node &b){ return a.dist <= b.dist; } priority_queue<node, vector<node>, comp> q;

comp is a function, not a type

András

Can anyone point out what's the mistake in my code snippet? struct node{ int dist = -1; int m[3][3] = {0}; node(int d){ dist = d; } }; bool comp(node &a, node &b){ return a.dist <= b.dist; } priority_queue<node, vector<node>, comp> q;

decltype(comp) instead of comp

Anonymous

priority_queue<node, vector<node>, decltype(comp)> q(comp);

Also, there is another error : error: field 'std::priority_queue<node, std::vector<node>, bool(node&, node&)>::comp' invalidly declared function type _Compare comp;

Anonymous

So, should the comp be declared as bool(node&, node&)>::comp?

Artöm

No

Artöm

Your comp does not satisfy Compare requirement. I assume you use visual studio, right?

Artöm

Can anyone point out what's the mistake in my code snippet? struct node{ int dist = -1; int m[3][3] = {0}; node(int d){ dist = d; } }; bool comp(node &a, node &b){ return a.dist <= b.dist; } priority_queue<node, vector<node>, comp> q;

Why <= ? It should be <

Artöm

Your comp does not satisfy Compare requirement. I assume you use visual studio, right?

https://en.cppreference.com/w/cpp/named_req/Compare