QScopedArrayPointer 类

template <typename T, typename Cleanup> class QScopedArrayPointer

QScopedArrayPointer 类存储动态分配对象数组的指针，并在销毁时删除它。更多...

头：	#include <QScopedArrayPointer>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Core) target_link_libraries(mytarget PRIVATE Qt6::Core)
qmake:	QT += core
继承：	QScopedPointer

注意： 此类的所有函数可重入 .

公共函数

	QScopedArrayPointer ()
	QScopedArrayPointer (D * p )
T &	operator[] (qsizetype i )
const T &	operator[] (qsizetype i ) const

详细描述

A QScopedArrayPointer is a QScopedPointer that defaults to deleting the object it is pointing to with the delete[] operator. It also features operator[] for convenience, so we can write:

void foo()
{
    QScopedArrayPointer<int> i(new int[10]);
    i[2] = 42;
    ...
    return; // our integer array is now deleted using delete[]
}

成员函数文档编制

QScopedArrayPointer:: QScopedArrayPointer ()

Constructs a QScopedArrayPointer instance.

`[explicit]` template <typename D, if_same_type<D>> QScopedArrayPointer:: QScopedArrayPointer ( D * p )

Constructs a QScopedArrayPointer and stores the array of objects pointed to by p .

T &QScopedArrayPointer:: operator[] ( qsizetype i )

Provides access to entry i of the scoped pointer's array of objects.

If the contained pointer is nullptr , behavior is undefined.

注意： In Qt versions prior to 6.5, i was of type int , not qsizetype , possibly causing truncation on 64-bit platforms.

另请参阅 isNull ().

const T &QScopedArrayPointer:: operator[] ( qsizetype i ) const