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Date: Wed, 13 May 2009 02:18:07 -0400 From: Scott McMurray
Subject: Re: [Boost-users] iterators must go To: boost-users@lists.boost.org Message-ID: Content-Type: text/plain; charset=UTF-8 On Sun, May 10, 2009 at 09:24, Neal Becker
wrote: Interesting presentation:
http://www.boostcon.com/site- media/var/sphene/sphwiki/attachment/2009/05/08/iterators-must-go.pdf
Very persuasive, but it's careful to touch only the examples that look nice. Note, for example, that every range was a whole container.
The three-iterators part was somewhat handwaved-over as well. Take this bit of current code, for example:
auto i = find(c.begin(), c.end(), some_pred()); rotate(c.begin(), i, c.end());
How do you do that nicely with ranges, when he has find returning a range? (Since right now, it implicitly actually returns 2 ranges.)
And how does insertion work? Do we still need to keep the iterators around for insertion position?
I'd love to see the finicky bits worked out, though, since I do like the idea.
~ Scott
Any place you really want a single iterator, a range of one value would work. For appending or streaming out, you really want the concept of an open-ended range. --John TradeStation Group, Inc. is a publicly-traded holding company (NASDAQ GS: TRAD) of three operating subsidiaries, TradeStation Securities, Inc. (Member NYSE, FINRA, SIPC and NFA), TradeStation Technologies, Inc., a trading software and subscription company, and TradeStation Europe Limited, a United Kingdom, FSA-authorized introducing brokerage firm. None of these companies provides trading or investment advice, recommendations or endorsements of any kind. The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.