Re: [boost] Range adaptor for adjacent_difference

From: Eric Niebler (eric.niebler_at_[hidden])
Date: 2005-08-27 21:01:33

(Sorry for the delay. I've been on the road and my bandwith has been 
very limitted.)

Chad Parry wrote:
> 
> I have a suggestion for the range_ex library.  It is such a useful library -- 
> IMHO, the Boost.Range library is useless without it.

Thanks! I know Thorsten feels similarly and would like to see it become 
an official part of Boost.Range.

   I would also like to
> see it include a numeric.hpp that has a version of adjacent_difference, etc.  

Oh, yeah. The numeric algorithms. I forgot about those. Thanks for 
reminding me!

> In my mind, any standard algorithm that takes an input iterator and an output 
> iterator as parameters could be rewritten as a range adaptor.  I attached a 
> sample implementation.  

Interesting.

> Thanks for the work that went into the library -- I hope it gets adopted.  I 
> personally find it much more powerful than BOOST_FOREACH.

I choose to take this as a compliment. :-)

Between dealing with FOREACH test failures and getting xpressive ready 
for review, I haven't had much time for the range algorithms and 
adaptors. After the dust has settled a bit, I hope to get back to 
thinking abouut Range (unless you or Thorsten beats me to it).

Thanks for the suggestions and the code. They are most welcome.

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