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N3986: Adding Standard support to avoid padding within structures -- Davalle, Gutson, Bustamente

By Blog Staff | May 20, 2014 02:39 PM | Tags: None

A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3986

Date: 2014-04-25

Adding Standard support to avoid padding within structures

by Sebastian Davalle, Daniel Gutson, Angel Bustamante

Excerpt:

Sometimes programmers might need to avoid the bitfields’ alignment to get a compact type. Although this behavior can be obtained in most compilers by specifying the "packed" attribute, a more standard and simpler way to force it should exist (similar to the :0 syntax).

N3985: A proposal to add coroutines... (Revision 1) -- Oliver Kowalke and Nat Goodspeed

By Blog Staff | May 20, 2014 02:36 PM | Tags: None

A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3985

Date: 2014-05-06

A proposal to add coroutines to the C++ standard library (Revision 1)

by Oliver Kowalke and Nat Goodspeed

Excerpt:

Changes in this revision

This document supersedes N3708. A new kind of coroutines -- std::symmetric_coroutine<T>
-- is introduced and additional examples (like recursive SAX parsing) are added.

A section explains the benfits of using coroutines in the context of event-based asynchronous model.

 

N3984: Adding attribute reflection to C++ -- Cleiton Santoia Silva and Daniel Auresco

By Blog Staff | May 20, 2014 02:34 PM | Tags: None

A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3984

Date: 2014-05-07

Adding attribute reflection to C++

by Cleiton Santoia Silva and Daniel Auresco

Excerpt:

C++ reflection mechanism could benefit from a more complete set of functionality, if we define how to
reflect attributes as well as types.

N3983: Hashing tuple-like types -- Geoffrey Romer

By Blog Staff | May 20, 2014 02:31 PM | Tags: None

A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3983

Date: 2014-05-07

Hashing tuple-like types

by Geoffrey Romer

Excerpt:

This paper proposes to add std::hash specializations for the “tuplelike” types in the standard library, namely std::pair, std::tuple, and std::array.

N3982: Rvalue reference overloads for optional -- Andrzej KrzemieĊ„ski

By Blog Staff | May 20, 2014 02:28 PM | Tags: None

A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3982

Date: 2014-04-03

Rvalue reference overloads for optional

by Andrzej Krzemieński

Excerpt:

... optional is just missing the rvalue reference overloads for these functions. This is what this proposal intends to fix: add rvalue reference overloads for member functions value and operator* (not for operator->, because it appears not to be implementable). I consider it a bug fix rather than a new feature, primarily because such an overload already exists and has been approved for function value_or. This is why I propose to fix it still in the first version of Fundamentals TS.

N3981: Removing trigraphs??! -- Richard Smith

By Blog Staff | May 20, 2014 02:25 PM | Tags: None

[Ed: This one might get the pre-Rapperswil mailing award for funniest title... Thanks for the chuckle, Richard.]

A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3981

Date: 2014-05-06

Removing trigraphs??!

by Richard Smith

Excerpt:

Trigraphs continue to pose a burden on users of C++.

This paper proposes that trigraphs be removed entirely.

N3973: A Proposal to Add a Logical Const Wrapper -- Jonathan Coe and Robert Mill

By Blog Staff | May 20, 2014 02:17 PM | Tags: None

A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3973

Date: 2014-05-12

A Proposal to Add a Logical Const Wrapper to the Standard Library Technical Report

by Jonathan Coe and Robert Mill

Excerpt:

We propose the introduction of a logical_const wrapper class that propagates const-ness to pointer-like (or reference-like) member variables.

N3972: Source-Code Information Capture -- Robert Douglas

By Blog Staff | May 20, 2014 02:15 PM | Tags: None

A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3972

Date: 2014-05-17

Source-Code Information Capture

by Robert Douglas

Excerpt:

In Issaquah, I presented the idea of "Call-Site Informed Default Variables" to the reflection study group, to get a sense of what direction to pursue. The goal was to craft a feature to allow a function to capture information about the source code calling it, moving toward obsoleting function-macros for these use cases. The response from the room was largely positive, and requests were focused on the desire to present a means to convey source code information to be passed to a function. This proposal seeks to do just that.

N4010-12: Evolution Issues Lists -- Ville Voutilainen

By Blog Staff | May 20, 2014 02:09 PM | Tags: None

A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document numbers: N4010-12

Date: 2014-02-28

C++ Standard Evolution Active Issues List (Revision R07)

C++ Standard Evolution Completed Issues List (Revision R07)

C++ Standard Evolution Closed Issues List (Revision R07)

by Ville Voutilainen

Excerpt:

The purpose of this document is to record the status of issues which have come before the Evolution Working Group (EWG) of the INCITS PL22.16 and ISO WG21 C++ Standards Committee. Issues represent potential defects in the ISO/IEC IS 14882:2003(E) document, and proposed extensions to it.