I already answered your mail 3 times. See, eg:
http://root.cern.ch/root/roottalk/roottalk01/4343.html
Please do not send mail from this account (EasyLife@post.kek.jp) that gives me
headaches.
Rene Brun
EasyLife@post.kek.jp wrote:
>
> Masahiro Sugaya---------------------------
> Address: 1-1 Oho, Tsukuba, Ibaraki 305-0801 Japan
> Office: 0298-79-6123
> Mail: sugayam@post.kek.jp
> From: Rene Brun <Rene.Brun@cern.ch>
> Subject: Re: [ROOT] reading / writing object to disk
> Date: Sun, 25 Nov 2001 19:35:32 +0100 (MET)
> Message-ID: <Pine.LNX.4.04.10111251933260.25631-100000@pcbrun.cern.ch>
>
> Hi rooters !!
> I have a question.
> When we write a program compiling with the root library and persist
> the TObject with TFile::Write method, I don't know who has the remote
> ownership and duty to delete of the TObject.
> I mean I wonder if it is necessary to delete the TObject in the next code.
>
> #include <TFile.h>
> #include <Myclass.h>
> #include <TROOT.h>
> TROOT root("myapp","myapp");
> int main(){
> TFile f("joe.root","recreate");
> Myclass *obj = new Myclass;
> obj->Write("aname");
> f.Write();
> f.Close();
> delete obj; <- Is this line needed ?
> return 0; ^^^^^^^^^^^^^^^^^^^^^
> }
>
>
> > Hi Joe,
> >
> > To write an object of class Myclass to a file, do:
> > TFile f("joe.root","recreate");
> > Myclass *obj = new Myclass;
> > obj->Write("aname");
> > f.Close();
> >
> > To read an object from a file:
> > TFile f("joe.root");
> > Myclass *obj = (Myclass*)f.Get("aname");
> >
> > Rene Brun
> >
> >
> > On Sun, 25 Nov 2001, joe robe wrote:
> >
> > > Hi rooters,
> > >
> > > just try to understand TFILE.
> > >
> > > I created a small testclass (with ClassImp etc macros
> > > and creating dict. file and are able to write this to
> > > disk.
> > >
> > > All I see is the only data member the class has.
> > >
> > > I just dont understand yet how to save and retrieve my
> > > WHOLE class to/from disk. Is that not possible ?? I
> > > have classes with huge data arrays which are filled
> > > after doing some calculations. I just want to save and
> > > later retrieve this COMPLETE state of the object with
> > > all its datamebers, objects etc.
> > >
> > > Is there a simple way to do that ??
> > >
> > > Thanks
> > >
> > > Joe
> > >
> > >
> > >
> > >
> > > __________________________________________________
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> > >
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