[ublas] Temporary stringstreams in operator <<

From: Robbie Vogt (r.vogt_at_[hidden])
Date: 2006-01-11 08:07:08

Hi all,

I've just been having some trouble with processes falling over and found 
to my surprise that writing out a matrix is eating up all my memory, and 
then some!

The reason seems to be that operator << for both vectors and matrices 
compile their output to a temporary stringstream and then send its 
contents to the ostream handed to it (via c_str() ).  Is there any logic 
reason to do this? This is obviously going to cause memory issues for 
large matrices for seeming no gain.  I notice that the non-generic 
version don't bother with the temporary...

Cheers,
Robbie.