如何从qt 6.3.0 c＆＃x2b;＆＃x2b;代码

发布于 2025-02-06 03:29:50 字数 1413 浏览 3 评论 0原文

使用QT 6.3.0 QVECTOR不再具有fromstdvector方法。我不完全理解将std :: vector复制到qVector 并且想知道如何修改下面的treewidgetController :: getReponses方法。

特别是建议这些模板：

std::vector<T> stdVec;
QVector<T> qVec = QVector<T>(stdVec.begin(), stdVec.end());

foreach被引用 qt foreach loop订购与Qlist的循环和此处 https://doc-snapshots.qt.io/qt6-dev/foreach-keyword.html

我不清楚的区域是：响应PTR可以替换t，但是如何处理新的响应Interem？

// This is a sample of the code, I would like to upgrade
void TreeWidgetController::getResponses()
{
    // First remove all possible previous children.
    removeAllChildren(_rootResponses);
    // Retrieve the list of available responses.
    vector<ResponsePtr> responses = dbSubsystem().getResponses();
    // Create a new ResponseItem for every response.
    foreach (ResponsePtr r, QVector<ResponsePtr>::fromStdVector(responses))
        new ResponseItem(_rootResponses, r);
}

原文

With Qt 6.3.0 QVector no longer has fromStdVector method. I didn't fully understand the answers in copying a std::vector to a qvector and would like to know how to modify the TreeWidgetController::getReponses method below.

In particular these templates were suggested:

std::vector<T> stdVec;
QVector<T> qVec = QVector<T>(stdVec.begin(), stdVec.end());

foreach is referenced Qt foreach loop ordering vs. for loop for QList and here https://doc-snapshots.qt.io/qt6-dev/foreach-keyword.html

The area I am unclear about is:
ResponsePtr could replace T but how would the new ResponseItem be handled?

// This is a sample of the code, I would like to upgrade
void TreeWidgetController::getResponses()
{
    // First remove all possible previous children.
    removeAllChildren(_rootResponses);
    // Retrieve the list of available responses.
    vector<ResponsePtr> responses = dbSubsystem().getResponses();
    // Create a new ResponseItem for every response.
    foreach (ResponsePtr r, QVector<ResponsePtr>::fromStdVector(responses))
        new ResponseItem(_rootResponses, r);
}

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霓裳挽歌倾城醉 2025-02-13 03:29:52

无需在此处重新发明轮子，只需查看frofStdVector（）方法，该方法qcorelib/tools/qvector.h在qt的早期版本中：

static inline QVector<T> fromStdVector(const std::vector<T> &vector)
{
   return QVector<T>(vector.begin(), vector.end());
}

您可以逐字将该功能逐字包含在您自己的标题之一中，然后将代码保持不变，也可以将其用作如何修改代码的示例。

There's no need to re-invent the wheel here, just have a look at the fromStdVector() method that is in qcorelib/tools/qvector.h in earlier versions of Qt:

static inline QVector<T> fromStdVector(const std::vector<T> &vector)
{
   return QVector<T>(vector.begin(), vector.end());
}

You can either include that function verbatim in one of your own headers and leave your code unchanged, or use it as an example of how you can modify your code.

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