Re: [Boost-users] Cannot use Boost.Croutines with range based for

Subject: Re: [Boost-users] Cannot use Boost.Croutines with range based for
From: Mueller-Roemer, Johannes Sebastian (Johannes.Sebastian.Mueller-Roemer_at_[hidden])
Date: 2014-08-28 02:56:33

Thanks, I was about to post the same link, didn't know that GCC 4.9 implements it. In any case, isn't adding new overloads to namespace std as Boost.Coroutine does illegal anyway (as per 17.6.4.2.1 which allows specializations for user defined types, not, however, overloads)?

--
Johannes S. Mueller-Roemer, MSc
Wiss. Mitarbeiter - Interactive Engineering Technologies (IET)
Fraunhofer-Institut für Graphische Datenverarbeitung IGD
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-----Original Message-----
From: Boost-users [mailto:boost-users-bounces_at_[hidden]] On Behalf Of Michel Morin
Sent: Thursday, August 28, 2014 08:32
To: boost-users_at_[hidden]
Subject: Re: [Boost-users] Cannot use Boost.Croutines with range based for
As per DR1442 (for C++11), the rule of range-based-for has been changed.
( http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1442 )
The new rule does not add namespace `std` as an associated namespace.
So `begin` and `end` should be defined as either
  - member functions, or
  - as free functions in the enclosing namespaces (e.g. `boost::coroutines`).
Recent gcc and clang implemented the new rule.
Regards,
Michel
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