Re: [Boost-bugs] [Boost C++ Libraries] #1993: Incorrect iterator_category computation in some iterator classes in Boost.Iterator

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #1993: Incorrect iterator_category computation in some iterator classes in Boost.Iterator
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-06-06 15:25:55


#1993: Incorrect iterator_category computation in some iterator classes in
Boost.Iterator
---------------------------------------------------------+------------------
  Reporter: Wijnand Suijlen <wijnandsuijlen_at_[hidden]> | Owner: dave
      Type: Bugs | Status: closed
 Milestone: Boost 1.36.0 | Component: iterator
   Version: Boost 1.35.0 | Severity: Problem
Resolution: invalid | Keywords:
---------------------------------------------------------+------------------
Changes (by dave):

  * status: new => closed
  * resolution: => invalid

Comment:

 The categories are correctly computed. An iterator cannot be called a
 standard forward iterator unless its operator* returns value_type&, and
 that is not possible with a zip iterator or with a transform iterator
 whose function returns by value. Please see
 http://www.boost.org/doc/libs/1_35_0/libs/iterator/doc/new-iter-
 concepts.html#motivation

 If you think you can get away with it, you can always specialize
 std::iterator_traits<It> to lie about the iterator's iterator_category.

--
Ticket URL: <http://svn.boost.org/trac/boost/ticket/1993#comment:1>
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