Re: [ublas] zero_vector broken? - No, it works as designed!

From: Gunter Winkler (guwi17_at_[hidden])
Date: 2007-12-10 17:05:21

Am Montag, 10. Dezember 2007 15:52 schrieb Neal Becker:

> I expect this to print 10 '0'.  Instead, it prints nothing.

Thats exactly want we want. The (usual) const_iterator exploits the 
structure of the underlying data an skips zeros if possible. Thus the 
const_iterator of zero_vector is actually a sparse iterator. 

The indexed_iterator mentioned in other replies, however, does not skip 
any zeros because it does not know the underlying structure. It simply 
counts from 0 to size and uses operator(int) to access the data.

mfg
Gunter