Re: std::map and root

From: Marc Escalier <escalier_at_lal.in2p3.fr>
Date: Sun, 13 Nov 2011 14:02:50 +0100

thanks Seb

ok, this looks rather complex for me...

ok, will try to manage

---

On Sun, 13 Nov 2011, Sebastien Binet wrote:

> Marc,
>
> On Sun, Nov 13, 2011 at 12:01 PM, Marc Escalier <escalier_at_lal.in2p3.fr> wrote:
>> also "first" and "second" seem not to work :
>>
>> indeed :
>>
>> root [5] hiter(const class map<string,TH1*,less<string>,allocator<pair<const
>> string,TH1*> > >::const_iterator)538905152
>>
>> -->proof that hiter was defined
> hiter was actually defined on-the-fly, but doesn't carry all the
> needed information.
>
> IIRC, we usually disable this feature in Athena (so we have "hard
> crashes" earlier on)
>
> you need to create a dictionary (CINT or Reflex) for the
> map<K,V>::const_iterator class and for the comparator function.
>
> in Atlas, we have this helper template metafunction to define the
> comparison operators:
> http://alxr.usatlas.bnl.gov/lxr/source/atlas/Control/RootUtils/RootUtils/PyROOTIteratorFuncs.h#042
>
> used like this:
> http://alxr.usatlas.bnl.gov/lxr/source/atlas/Database/AthenaPOOL/DBDataModel/DBDataModel/DBDataModelDict.h#012
> http://alxr.usatlas.bnl.gov/lxr/source/atlas/Database/AthenaPOOL/DBDataModel/DBDataModel/selection.xml#010
>
> (so, for Reflex, as that's what ATLAS and CMS rely on instead of CINT...)
>
> -s
>
Received on Sun Nov 13 2011 - 14:02:58 CET