RE:Re: CINT and operator->

From: Masaharu Goto (MXJ02154@nifty.ne.jp)
Date: Tue Jan 25 2000 - 13:57:44 MET


Hello George,

I hope this is fine too. I will implement this in cint5.14.29. 

Thank you
Masaharu Goto

>
>
>> This is a known cint limitation. Cint does not allow overloading -> 
operator.
>> It is possible to enhance this in cint, however, there is a problem for
>> existing root application.  Some of the existing macro depends on current
>> cint behavior. 
>
>Really? So there are classes in ROOT which overload operator->, yet a 
>macro uses -> to mean . for that class? To me, that seems like a recipe 
>for confusion anyway... (NB, I didn't find any occurances of 'operator->
>' in the ROOT source code, except a few things applying it in CINT/RINT
>code. I doubt very many users have used it to date, and those who did 
>probably didn't use it in a way which will cause problems, since using 
>it correctly requires a somewhat advanced understanding of C++.)
>
>I hope I was clear: I wasn't proposing removing the extension which 
>allows one to use -> as . in appropriate cases, merely that when one 
>has a class which overloads operator->, one uses that first, before 
>trying the extension to C++. If this is possible, it would provide very 
>few backwards compatibility problems, I should think.
>
>> I will implement overloading of operator-> in pure cint 5.14.28. However 
>> this feature will not be turned on for root to keep backward compatibility.
>
>Thanks much for this; I suspect that turning it on in ROOT would prove 
>to be just fine, though.
>
>George Heintzelman
>gah@bnl.gov
>



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