Hi Chris,
yes, friends are just normal functions that can access certain class
internals. To add a friend (or any other function) to a dictionary
specify it in your LinkDef.h file like this:
#pragma link C++ function operator*(Float_t,TH1C&);
Cheers, Fons.
PS: if you think your ThreeVec class is good enough for the rest of the
community, please make it available.
Chris Jillings wrote:
>
> Hi all,
> I have gone from simple root programming to jumping in the deep end.
> I have a class, QThreeVec, which handles 3-vectors in an elegant way. It
> has been working for years here in other codes.
> I took on the task of rootifying it. The code compiles but the
> dictionary generation fails. I thought that perhaps friend functions were
> causing the trouble. The friend functions are ncessary to ensure that an
> expression like
> ThreeVec u,v;
> Float_t a;
> v=u*a;
>
> behaves in the same way as
> v=a*u;
>
> Does the dictionary handle friends?
> Thanks,
>
> Chris
>
> =================================================================
> = =
> = Chris Jillings =
> = Department of Physics phone/voice mail: (613) 545-6000x4805 =
> = Queen's University fax: (613) 545-6813 =
> = Kingston, Ontario email: chris@sno.phy.queensu.ca =
> = Canada, K7L 3N6 web: http://sno.phy.queensu.ca =
> = =
> =================================================================
--
Org: CERN, European Laboratory for Particle Physics.
Mail: 1211 Geneve 23, Switzerland Phone: +41 22 7679248
E-Mail: Fons.Rademakers@cern.ch Fax: +41 22 7677910
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