Re: Copy constructor of TObjArray

In MyClass.h replace

   ClassDef(MyClass,0)
by

   ClassDef(MyClass,1)

Rene Brun

Vassili Maroussov wrote:
> Dear Rene,
>
> for some reason it doesn't work for standalone executable, please find
> example in the attachment. The "testclone" output shows that objects
> in the collection aren't copied both for the Clone() (T2) and the copy
> constructor (T3) :
>
> [vmarouss_at_Ezhik-HDX18 TestClones]$ ./testclone
> Entry #0
> T1: (MyClass): X=0.5 Y=-0.5
> T2: (MyClass): X=0 Y=0
> T3: (MyClass): X=0 Y=0
> Entry #1
> T1: (MyClass): X=1.5 Y=-1.5
> T2: (MyClass): X=0 Y=0
> T3: (MyClass): X=0 Y=0
> Entry #2
> T1: (MyClass): X=2.5 Y=-2.5
> T2: (MyClass): X=0 Y=0
> T3: (MyClass): X=0 Y=0
>
> OS: Fedora12, ROOT version 5.25.03, gcc version 4.4.3 20100127 (Red
> Hat 4.4.3-4) (GCC) Target: x86_64-redhat-linux
>
> Regards,
>
> Vassili
>
> On 04/20/2010 02:53 PM, Rene Brun wrote:
>> Hi Vassili,
>>
>> If you want to make a deep copy of all the objects in the collection
>> for a TObjArray *a (or TClonesArray), do
>> TObjArray *b = (TObjArray*)a->Clone();
>>
>> Rene Brun
>>
>> Vassili Maroussov wrote:
>>> Dear ROOTers,
>>>
>>> It seems the copy constructor of TObjArray and TClonesArray copies
>>> only the pointers' array but doesn't create copies of objects in
>>> collection, correct?
>>>
>>> Regards,
>>>
>>> Vassili
>>>
>>
>
Received on Wed Apr 21 2010 - 12:14:12 CEST