what do you mean by "QList will allocate memory on the heap internally." ?
I mean if I do :
Number n(2);
list.append(n);
return list;
n will be deleted right ?
otherwise who will delete it
Novice
Re: QList with pointers
what do you mean by "QList will allocate memory on the heap internally." ?
I mean if I do :
Number n(2);
list.append(n);
return list;
n will be deleted right ?
otherwise who will delete it
The "Q"
Re: QList with pointers
n will be deleted but its copy that is in the list will get copied again and returned as part of the list. That's why you need to implement the copy constructor for your class. And if you make Number an implicitly shared class, only the facade part of the object will be allocated on the stack and the real data will reside on heap and will not be copied whenever the object itself is copied.
Your biological and technological distinctiveness will be added to our own. Resistance is futile.
Please ask Qt related questions on the forum and not using private messages or visitor messages.
Novice
Re: QList with pointers
how do I make a class to be implicitly shared class ?
thanx
The "Q"
Re: QList with pointers
Open Qt Assistant and type in "Implicitly Shared Classes" in the index tab. Then type in "QSharedDataPointer".
Your biological and technological distinctiveness will be added to our own. Resistance is futile.
Please ask Qt related questions on the forum and not using private messages or visitor messages.
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