Re: [Boost-users] BOOST_FOREACH and iterating by reference

From: Eric Niebler (eric_at_[hidden])
Date: 2007-05-24 15:31:22

Daniel Gehriger wrote:
> My I suggest an addition to BOOST_FOREACH ?
> 
> I happen to work with custom containers whose iterators are invalidated when
> certain member functions are called on the contained objects. So I typically
> use a loop pattern as follows:
> 
> -------------------
> for (Coll::iterator it = col.begin(); it != col.end(); /* noop */)
> {
>     Coll::value_type& o = *(it++);
>     o.destroy();
> }

Are you saying that calling o.destroy() causes "it" to  be invalidated? 
This is bad practice. If that's not the case, then vanilla FOREACH 
should meet your needs. Please correct me if I've misunderstood your 
situation.

-- 
Eric Niebler
Boost Consulting
www.boost-consulting.com