Re: [Boost-users] chaining ouput iterator to input iterator

9 Jul 2012


      ...
-----Original Message-----
From: boost-users-bounces@lists.boost.org [mailto:boost-users-
bounces@lists.boost.org] On Behalf Of Nathan Ridge
Sent: 09 July 2012 19:20
To: Boost Mailing List
Subject: Re: [Boost-users] chaining ouput iterator to input iterator
...
...
...
...
your options are ... 2) use a Boost.Context-based solution as I
mentioned before.
...
Boost.Coroutine? Is that in boost vault?
[snip]
Frankly, the coroutine seems very unnatural as I am accustomed to the
separation of concerns, and the mechanism of of function call, and so
on...
I was also wondering if some lazy function from phoenix could help
with
this, or really a boost::transform_iterator could do it somehow
Is it possible for you to change the implementation of my_transform? If
so,
could you post its implementation (or an outline of it)? We may be able
to
suggest a way to express the same thing with boost::transform_iterator
instead.
Regards,
Nate
I wouldn't be able to change the signature...

template 
void ratios( InputIterator begin, InputIterator end, OutputIterator out )
{
  auto i=begin; ++i;
  auto prev=begin;
  while (i!=end) {
    *out = (*i)/(*prev);
    ++out; ++i; ++prev;
  }
}

MM