diff --git a/doc/iter-issue-list.rst b/doc/iter-issue-list.rst new file mode 100644 index 0000000..8b0198e --- /dev/null +++ b/doc/iter-issue-list.rst @@ -0,0 +1,69 @@ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + Our Personal Iterator Issue List +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + +.. _N1550: http://www.boost-consulting.com/writing/n1550.html +.. _N1530: http://anubis.dkuug.dk/jtc1/sc22/wg21/docs/papers/2003/n1530.html + +:Author: David Abrahams and Jeremy Siek +:Contact: dave@boost-consulting.com, jsiek@osl.iu.edu +:Organization: `Boost Consulting`_, Indiana University Bloomington +:date: $Date$ +:Copyright: Copyright David Abrahams, Jeremy Siek 2003. Use, modification and + distribution is subject to the Boost Software License, + Version 1.0. (See accompanying file LICENSE_1_0.txt or copy + at http://www.boost.org/LICENSE_1_0.txt) + +.. _`Boost Consulting`: http://www.boost-consulting.com + + +reference requirements in readable iterator +------------------------------------------- + +The DR has been submitted. This is a placeholder for updating our +proposals with respects to the resolution of that DR. + + +Message c++std-lib-12562 +------------------------ + +The template functions operator==, operator!=, operator<, operator<=, +operator>, operator>=, and operator- that take two arguments that are +specializations of iterator_facade have no specification. The template +function operator+ that takes an argument that is a specialization of +iterator_facade and an argument of type difference_type has no specification. + + +Message c++std-lib-12563 +------------------------ + +The table listing the functions required for types derived from +iterator_facade has two functions named equal and two named distance_to:: + + c.equal(b) + c.equal(y) + + c.distance_to(b) + c.distance_to(z) + +where b and c are const objects of the derived type, y and z are constant +objects of certain iterator types that are interoperable with the derived type. + +Seems like the 'b' versions are redundant: in both cases, the other version +will take a 'b'. In fact, iterator_adaptor is specified to use +iterator_facade, but does not provide the 'b' versions of these functions. + +Are the 'b' versions needed? + + +Message c++std-lib-12566 +------------------------ + +The footnote says: + +>The UnaryTypeTrait concept is defined in n1519; the LWG added the +>requirement that specializations are derived from their nested ::type. + +This is not correct. We had a vague discussion of this in Kona and agreed +in principle, but at the time there was no formal proposal. It's in the +issues list as a new issue.