[boost] [mpl]iter_fold_if use of apply1 instead of iter_apply1 maybe bug?

Subject: [boost] [mpl]iter_fold_if use of apply1 instead of iter_apply1 maybe bug?
From: Larry Evans (cppljevans_at_[hidden])
Date: 2009-02-04 10:20:00

The following code line:

https://svn.boost.org/trac/boost/browser/trunk/boost/mpl/iter_fold_if.hpp#L44

shows apply1<Predicate,Iterator>; however, shouldn't
this be iter_apply1<Predicate,Iterators> because,
just from the name, Iterator is an iterator and needs
to be deref'ed.  Also, the previous line:

   not_< is_same<Iterator,LastIterator> >

further suggests that Iterator is actually an iterator.

I know it works presently; however, I really don't understand
why.