A few basic questions about RTTI facility and I/O via the TTree class

James M White (jmw@c3serve.c3.lanl.gov)
Tue, 20 May 1997 10:25:46 -0600 (MDT)

Greetings,
I have a few basic questions about the RTTI facility and I/O
via the TTree class. They are:

1) If you have a collection of objects that is too large to keep in
memory is the TTree the only/best collection class to use?

2) Can you change the size of an object in the TTree (by adding a new
member into a container within the object) without re-building the
tree?

3) Can you insert a new object into the middle of a TTree without
re-building the tree?

4) I want to use a TMap to associate a TString to a class type and
then create new objects of a particular type based on a given TString?
I've looked at the RTTI facility but am unclear on exactly how this
would work.

Thanks,
Jim White

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Jim White                                     505-667-0398
Los Alamos National Laboratory          (FAX) 505-665-5220
MS B-265
Los Alamos, NM 87545
jmw@lanl.gov        http://www.c3.lanl.gov/~jmw/info.shtml
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