QVariant::ConstPointer Class
template <typename Indirect> class QVariant::ConstPointerQVariant::ConstPointer 是一个模板类，用于模拟指向QVariant 的常量指针。更多内容...
该类在 Qt 6.11 中引入。
公共函数
| ConstPointer(Indirect &&pointed) | |
| ConstPointer(const Indirect &pointed) | |
| QVariant::ConstReference<Indirect> | operator*() const |
详细说明
QVariant::ConstPointer<Indirect> 封装了一个类型为Indirect 的被指值，并通过其 operator*() 返回指向该值的QVariant::ConstReference 。这使其适合作为实际指针的替代品。我们无法从泛型迭代器中返回实际指针，因为迭代器本身并不持有实际的QVariant 。
成员函数文档
[explicit noexcept(...)] ConstPointer::ConstPointer(Indirect &&pointed)
根据值pointed to 构建一个QVariant::ConstPointer 。
注意： 当std::is_nothrow_move_constructible_v<Indirect> 为true 时，该 函数为 noexcept。
[explicit noexcept(...)] ConstPointer::ConstPointer(const Indirect &pointed)
根据值pointed to 构造一个QVariant::ConstPointer 。
注意： 当std::is_nothrow_copy_constructible_v<Indirect> 为true 时，此 函数为 noexcept。
[noexcept(...)] QVariant::ConstReference<Indirect> ConstPointer::operator*() const
将QVariant::ConstPointer 解引用为QVariant::ConstReference 。
注意： 当std::is_nothrow_copy_constructible_v<Indirect> 为true 时，该 函数为 noexcept。
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