如何对CArray的指针进行排序？

Question

As you might have already guessed I don't want to sort the pointer addresses but the objects/data.

At the moment I have an array like this:

CArray <ReadObject *> readCollecion; 

and I sort it like that:

std::sort(readCollecion.GetData(), readCollecion.GetData()+readCollecion.GetSize(), keySortFunction);

Works perfectly with the keySortFunction.

The problem is I need pointers to my objects because I need to modify the objects while they are already in the array. I guess I need and Array like this:

CArray <ReadObject *> readCollecion; 

Now I can change the objects afterwards but my sort seems to be unable to deal with this.

Answer 1

bool keySortFunction(const ReadObject& o1, const ReadObject& o2)
{
    return ...;
}

CArray <ReadObject> readCollecion; 
std::sort(readCollecion.GetData(), readCollecion.GetData()+readCollecion.GetSize(), eySortFunction);

...

CArray <ReadObject*> readCollecion2;
std::sort(readCollecion2.GetData(), readCollecion2.GetData()+readCollecion2.GetSize(), [](ReadObject* o1, ReadObject* o2)
{
    return keySortFunction(*o1, *o2);
});

Answer 2

如果我正确地理解了您的问题，那么您要做的就是将keySortFunction的参数类型从const ReadObject&更改为const ReadObject* ，并对函数进行适当的更改以使用->而不是.