What's the difference between these 2 lines
CArray<MyClass, MyClass> MyArray
CArray<MyClass, const MyClass & > MyArray
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问题:
回答1:
The MyClass is always copied to the array. But the first form copies it twice: the first time when its given as a parameter to the Add or SetAt function, the second time internally. With the second form you avoid the first copy.
回答2:
In the first case you need to have accessable copy constructor in MyClass, and MyClass will be passed by value (copied) in some members of CArray( in CArray::Add for instance).
