Re: How to know if an object is still exist ?

From: Otto Schaile (Otto.Schaile@Physik.uni-muenchen.de)
Date: Mon Mar 29 1999 - 14:56:24 MEST


On Mon, 29 Mar 1999, Wei Xie wrote:

> 
> Dear Rooter, 
> 
> Maybe the question is already exist in ROOT digest but I failed to 
> find it:
> 
>    How to know if an object is  exist or not ?
> 

  you can use:  Bool_t is_alive = obj->Testbit(kNotDeleted);

  however this is n o t 100 % save, since obj may point to any
  meanwhile overwritten area in memory. If you dont use the 
  lower 24 bits of fBits otherwise you could make it quite save.


> One more question is :
> 
>     Is there a easy way to lookup ROOT digest if my question has 
>     already been answered or not, e.g. to find a my keyword is in the
>     contant (not subject) of a e-mail ?  Trying to go through every
>     message is really not easy.  
> 

Cant help on this

Cheers
Otto

----------------------------------------------------------------------------
Otto Schaile                    Sektion Physik der LMU Muenchen
Phone: (+49 89)289 14070        Am Coulombwall 1, D-85748 Garching, Germany
FAX:   (+49 89)289 14072        EMail: Otto.Schaile@Physik.Uni-Muenchen.DE



This archive was generated by hypermail 2b29 : Tue Jan 04 2000 - 00:43:31 MET