Share a C++14/17 based HTTP application framework：https://github.com/an-tao/drogon

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Share a C++14/17 based HTTP application framework：https://github.com/an-tao/drogon

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Hey!

wondering how to override callback function in Qt's QOAuthHttpServerReplyHandler()

for anyone interest in helping this is where you can find the sourcecode online

https://code.woboq.org/qt5/qtnetworkauth/src/oauth/

im not sure how to properly subclass QOAuthHttpServerReplyHandler which is derived from QOAuthOobReplyHandler() which is derived from QAbstractOAuthReplyHandler() In QAbstractOAuthReplyHandler() callback() is declared as a public function`virtual QString callback() const = 0;` In QOAuthOobReplyHandler() callback() is declared as a public function`QString callback() const override;` In QOAuthHttpServerReplyHandler() callback() is declared as a public function QString callbackPath() const;

from qoauthhttpserverreplyhandler.cpp: QString QOAuthHttpServerReplyHandler::callback() const { Q_D(const QOAuthHttpServerReplyHandler); Q_ASSERT(d->httpServer.isListening()); const QUrl url(QString::fromLatin1("http://127.0.0.1:%1/%2") .arg(d->httpServer.serverPort()).arg(d->path)); return url.toString(QUrl::EncodeDelimiters); }

alot of functions use an object d which is expanded from the macro #define Q_D(Class) Class##Private * const d = d_func() as in Q_D(const QOAuthHttpServerReplyHandler); expands to: QOAuthHttpServerReplyHandlerPrivate * const d = d_func();

and in QOAuthHttpServerReplyHandlerPrivate: there are these cast and friend statements that i think might complicated it? Q_DECLARE_PUBLIC(QOAuthHttpServerReplyHandler) which expand to: inline QOAuthHttpServerReplyHandler* q_func() { return static_cast<QOAuthHttpServerReplyHandler *>(q_ptr); } inline const QOAuthHttpServerReplyHandler* q_func() const { return static_cast<const QOAuthHttpServerReplyHandler *>(q_ptr); } friend class QOAuthHttpServerReplyHandler;

ive been reading this https://wiki.qt.io/D-Pointer but i still dont get it

Cin.ignore() remove first char in string but I required these. What should I do

For taking next line string input in function

Please help

For taking next line string input in function

To read a line std::string response; std::getline(std::cin, response);

Thanks ☺

morning everyone

bool compare(int a,int b) { if(minHeap) return a<b; else a>b; Given>minHeap=true; How this function is working if I call this. While(1st condition &&compare(x,y)) { }

#help please

bool compare(int a,int b) { if(minHeap) return a<b; else a>b; Given>minHeap=true; How this function is working if I call this. While(1st condition &&compare(x,y)) { }

Can you explain what you need more properly?

Your function returns nothing when minHeah == false

And that's undefined behaviour

guys i am getting error when trying to sort std::map by its value

can someone help me?

There's no need to sort a map

and what is 'operator-'

1) std::sort accepts only RandomAccessIterator`s, for example `std::vector provides such iterators 2) std::map contains its elements in a ascending order by default, unless you specified other order (you didn't)

and what is 'operator-'

operator- is operator -

1) std::sort accepts only RandomAccessIterator`s, for example `std::vector provides such iterators 2) std::map contains its elements in a ascending order by default, unless you specified other order (you didn't)

oh i see

but i think the order is made by the keys..and not from the values?

Insted of #define ll long long use int64_t

but i think the order is made by the keys..and not from the values?

Yes, this is the point

because it uses hashing and maintains a balanced tree structure..which gives O(n)

Insted of #define ll long long use int64_t

alright..ill study about int64_t.. thank you

because it uses hashing and maintains a balanced tree structure..which gives O(n)

It doesn't

Searching and inserting key-value pairs are O(logn) for std::map

yeah sorry..O(log(n))

so how can i sort map from values instead of the key?

so how can i sort map from values instead of the key?

There's no way to do it afaik

https://stackoverflow.com/questions/5056645/sorting-stdmap-using-value

https://thispointer.com/how-to-sort-a-map-by-value-in-c/

ive tried them

but they dont work for me

If you need such a feature, I assume there's something wrong with you desing, and your code tells me the same thing

yeah coding style in the code is worse..i know but am not developing any software..i am just doing CP..here time and correctness gets more points

to save time in typing and focusing on the solution approach is what we focus on in competitions.

sorry for poor code

You are not at a competition right now You can focus on writing good code

https://stackoverflow.com/questions/5056645/sorting-stdmap-using-value

but i am not the only one who has faced this problem.. there are many question on stack overflow, g4g, and other sites..as well

Not even good Just not bad one

You are not at a competition right now You can focus on writing good code

yes..I'll keep this in mind. thank you:)

Not even good Just not bad one

yes, i follow.

Just use more expressive variables name

And i think you need to reconsider your way of solving the problem

Good luck

yeah, thank you :)

operator- is operator -

but how does it comes in sort()? in my lambda..ive used '>' operator.

but how does it comes in sort()? in my lambda..ive used '>' operator.

Iterator distance, since RAIters can be substracted from eqch other

but how does it comes in sort()? in my lambda..ive used '>' operator.

I don't know std::sort function is desinged for sequences with random access This means that only array-based containers are suitable, such as std::vector, std::array

dont you think that sort in map is also important?

dont you think that sort in map is also important?

I don't

okay

You don't know what map is, if you ask such questions

thanks again

You don't know what map is, if you ask such questions

i think i know what a map is....but as you suggest ill study it one more time..

i think i know what a map is....but as you suggest ill study it one more time..

std::map elements are sorted by keys

That's is the point of std::map

std::map elements are sorted by keys

Alright

Alright

I think your problem has different solution, but it is offtopic

Yes..now I'm trying different approach

Thank you

hello

hello

nohello.com

can i put my problem on the javascript?

can i put my problem on the javascript?

No

can i put my problem on the javascript?

@it_chats

ok thanks

To read a line std::string response; std::getline(std::cin, response);

I know about these but when I want to read multiple line and store in the same string variable .the first character is get ignore so I required these first char....