[ROOT] RE:non title

From: Masaharu Goto (MXJ02154@nifty.ne.jp)
Date: Fri May 12 2000 - 15:52:37 MEST


Dear George,

I understand your request. I'll think about implementation.

Attatched is a shell script to merge cint source into root. You may need
to modify this.

Thank you
Masaharu Goto


>Masaharu wrote:
>
>>Thank you for sending me the request. I implemented following pragma in
>>cint5.14.38.
>
>>  #pragma link [C|C++|off] function [scopename]::[funcname]([argtypes]);
>
>>You can specify scope with '#pragma link -- function'. Other things are
>>same as before. 
>
>Is there any chance of using the same syntax for supporting (to some 
>level) template member functions? I would want template members to be 
>off by default (unless CINT found one that it knows has been 
>instantiated anyway, perhaps), but where you could specify an explicit 
>link to a template member. Smart pointers in particular this would be 
>handy.
>
>#pragma link C++ function SmartPointer<X>::SmartPointer<X>
>(SmartPointer<Y>);
>
>for example is a very common idiom for smart pointer classes, so that 
>you can implicitly convert smart pointers to Derived into smart 
>pointers to Base. Of course, you can't specify all the possible 
>conversions, but it may well be possible to specify enough of a subset 
>to do the task you need to do in interpreted code.
>
>Being able to turn off particular instantiations of certain functions 
>is also excellent and well appreciated -- we've already run into 
>trouble with this with certain template classes, and will make use of 
>this as soon as we get the version of CINT that implements it in the 
>version of ROOT we use.
>
>BTW -- perhaps this should be a different message, but -- is there a 
>package/script that would allow someone with a version of ROOT to 
>upgrade just the version of CINT it is running (obviously, one would 
>have to recompile)? It seems that the released versions of ROOT are 
>often somewhat behind Masa's current version, and it would be nice to 
>use, say, version 2.23 of ROOT with cint5.14.38; I know I would use 
>this functionality if it were available.
>
>George Heintzelman
>gah@bnl.gov
>




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