Subject: Re: [Boost-users] BOOST_FOREACH with Index
From: Nat Goodspeed (nat_at_[hidden])
Date: 2009-12-13 20:41:24
Eric Niebler wrote:
>>> Why not:
>>>
>>> int index = 0;
>>>
>>> BOOST_FOREACH(const Foo &f, foos)
>>> {
>>> // ... stuff ...
>>> ++index;
>>> }
> What value BOOST_FOREACH has comes
> primarily from its ability to simplify something that's already pretty
> darn simple -- a plain for(;;) loop. I strongly resist any effort to
> make BOOST_FOREACH more complicated, unless the wins are truly
> significant. In this case, I don't think they are.
Maybe this shouldn't be a BOOST_FOREACH feature at all. As with Python's
builtin enumerate() function, maybe what we want here is an iterator
adapter that dereferences to a std::pair<index_type,
original_iterator_value_type>?