From: Jason Hise (0xchaos_at_[hidden])
Date: 2006-10-26 12:24:39
Does boost provide any sort of iterator adapter which can be used as a
forward iterator through a collection, but which will act like an
output iterator upon reaching the end and push back new values? I am
looking for something which will allow me to build a collection as
though I was using an output iterator, but will also allow me to save
copies of the current iterator so that I can modify the values they
point to later.
If there isn't, should I roll my own, or is there a better way to do
what I want?
If I do roll my own, would people be interested in seeing it developed
into a boost library?
Sidenote: This iterator adapter would require push_back to not
invalidate existing iterators (other than end). Therefore, a special
iterator might need to be specified when wrapping certain collections.
For instance, random access containers (vector and deque) would
probably need iterators that stored an integer index and a pointer to
the container, because push_back would be likely to result in memory
Boost list run by bdawes at acm.org, david.abrahams at rcn.com, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk