Hi,
I thought only variable size arrays of simple types were allowed (p.177 of
User's Guide). Is this no longer a restriction ?
Actually when I modify your read.C as follows to print out the data
members of foo, it doesn't seem to work :
{
gSystem->Load("libfoo");
Foo *foo=0;
TFile f("xxxxx.root");
tree.SetBranchAddress("foo",&foo);
Int_t nentries=tree.GetEntries();
Int_t nb=0;
for (Int_t i=0;i<nentries;i++) {
nb += tree.GetEntry(i);
foo->Set(foo->iEv,foo->nMod);
if(foo->nMod>0){
cout<<foo->modules[0]->adc[0]<<endl;
}
foo->Set(0,0);
}
printf("nb=%d\n",nb);
}
Carlos
On Mon, 14 Jun 2004, Rene Brun wrote:
>Hi,
>
>See the tar file in attachement with your classes modified to run
>correctly. I also added a small reader example.
>
>Rene Brun
>
>Yiqun Wang wrote:
>>
>> Hi, ROOTers:
>>
>> In Guide (3.10), I see one can have a variable-size array for a simple
>> type (Int_t, Float_t, etc.). Can we do that for a compiled class? I tried
>> the attached program, but got many errors (mismatched size) when reading
>> the root file in an interactive session. Any suggestions?
>>
>> The motivation is to save disk space. Events I have may have interesting
>> data in only one module, or multiple modules. If possible, I don't want to
>> write all modules when some of them do not contain interesting data.
>>
>> To run my simplied example, untar the attached "test.tar.gz" in an empty
>> directory, and run "make all". After that, run "./test" and generate the
>> root file "xxxxx.root". This file has one tree "tree", which contains a
>> branch "foo" (of class "Foo"). The leaf "modules" is the variable-size
>> array of compiled class "Bar".
>>
>> Thanks!
>>
>> Yiqun Wang
>>
>> --------------------------------------------------------------------------------
>> Name: test.tar.gz
>> test.tar.gz Type: Unix Tape Archive (application/x-tar)
>> Encoding: base64
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