QVector array declear

[zhxys]

Is it correct to declear a vector like below? In document, it says ok, but when compiling it, it gives error. If I remove (200), then compiling ok.

QVector<QString> vector(200);

[high_flyer]

Edit:
Wrong stuff said.

[zhxys]

thanks for the reply, but both of your examples compiling failed also. (declaration syntax error)

funny enough, this is copied from qt doc
http://doc.qt.nokia.com/latest/qvector.html#details

any ideas?

[high_flyer]

You original code is correct.
Post you code, the problem is probably somewhere else.

[zhxys]

if you copy that line to any header file, and then compile, you will see the compiling error!

[ChrisW67]

This:

#include <QString>
#include <QVector>
 
QVector<QString> vector(200);
 
int main(int argc, char **argv)
{
}

#include <QString>
#include <QVector>

QVector<QString> vector(200);

int main(int argc, char **argv)
{
}

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is just fine for me.

Exactly what is the error message when you compile that?

[zhxys]

Hi,
As I said, put it to a class header file for example, then it will give "declaration syntax error". What I want is to define a fix sized vector contains constant strings or other struct.

#include <QString>
#include <QVector>

class MyClass
{
...

private:
QVector<QString> vector(200);
};

Thanks,

[high_flyer]

Ah, of course, you can't intialize like that in a header!
In you header you do:

QVector<QString> vector;

QVector<QString> vector;

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And in the implementation then you do:

vector.resize(200);

vector.resize(200);

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[ChrisW67]

Or, a slight variation using the initialisation list:

// test.h
class Test 
{
    QVector<QString> vector;
public:
    Test();
};
 
// test.cpp
Test::Test(): 
    vector(200) 
{ 
}

// test.h
class Test 
{
    QVector<QString> vector;
public:
    Test();
};

// test.cpp
Test::Test(): 
    vector(200) 
{ 
}

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