fix(mainwindow): use simplified instead of trimmed in diff

[ouuan]

This partially fixes #38.

[caretaker-claire]

Hi ouuan
Thank you for your contribution to cp-editor2. I will request a review from one of the contributor. Once they approves and all CI checks passes, I will merge your Pull Request.

[coder3101]

https://doc.qt.io/qt-5/qstring.html#simplified

According to docs this function replaces \n characters. So it basically makes everything one line, every multiline output is converted into one line output. So now following are same :

2
4 
6

and

2 4 6

While this is obviously Wrong answer on Codeforces or any other platforms.

Reverted the commit, Please open a new PR fixing this issue (We need to manually implement that function I talked about in #38)

[ouuan]

https://doc.qt.io/qt-5/qstring.html#simplified

According to docs this function replaces \n characters. So it basically makes everything one line, every multiline output is converted into one line output. So now following are same :

2
4 
6

and

2 4 6

While this is obviously Wrong answer on Codeforces or any other platforms.

Reverted the commit, Please open a new PR fixing this issue (We need to manually implement that function I talked about in #38)

In other OJs this may be WA, but in most problems on CF, white spaces don't matter.

[ouuan]

[coder3101]

Yes, So people who use Codechef and other platforms will complain about it. It will be better if newlines are maintained.

[ouuan]

Where should I write a function for comparing? It doesn't seem like a "member function".

(In fact, almost all functions returns void.)

[coder3101]

Create a function with following signature in mainwindow.cc.

bool MainWindow::isVerdictPass(QString output, QString expected){...};

It should return true if verdict is AC otherwise false.
Create this after the definition of function launchSession().

Then you need to declare it as well, in mainwindow.hpp, just after launchSession(); declare it (private);

....
bool isVerdictPass (QString, QString);
...

Then replace that isSame with the value returned from this call, pass the arguments as expected.

[coder3101]

Where should I write a function for comparing? It doesn't seem like a "member function".

(In fact, almost all functions returns void.)

Yes they are member function that behave like callbacks, callbacks usually have void return type. They are normal C++ classes and functions. No magic, you can do whatever you like.