GoingNative 56: CMake in Visual Studio
In this episode, Marian Luparu and Iyyappa Murugandi chat with Steve about CMake support in Visual Studio:
GoingNative 56: CMake in Visual Studio
with Steve Carroll, Marian Luparu and Iyyappa Murugandi
Coding dojo in C++ Madrid | March 2017 @ Tuenti
Madrid's C++ meetup is organizing a Coding Dojo at Tuenti's HQ (calle Valverde, ID required).
Title: Coding "dojo" C++ moderno (C++11, C++14)
Organized by C++ Madrid
Several katas will be proposed by Manu Sánchez, Diego Rodríguez-Losada and Esteve Fernández which will be solved and discussed in common. Read more in the link above [in Spanish].
We've got a full house already!! Thanks for your interest.
Lambda Overdose
Do you feel the same way?
Lambda Overdose
by Arne Mertz
From the article:
Lambdas are a nice recent addition to C++. They are cool, they are hip, and they tend to be overused and misused.
Since lambda expressions came up in C++11 and got a huge boost in usability in C++14, they have been all the rage. Don’t get me wrong. Lambdas really are useful and cool and everything. But reading blog posts, the CppLang Slack channel and other sources lately has given me the impression that some people use lambdas in ways they should not be used...
Refactoring the HTML Text Editor for QWebEngine
An update on the HTML Text Editor I hacked with Qt and TinyMCE3:
Refactoring the HTML Text Editor for QWebEngine
by Jens Weller
From the article:
In the last post, I described my experience with using MSVC as a compiler in combination with QtCreator. The reason I set this up was, that with Qt 5.7 QWebkit isn't anymore supported, and the HTML TextEditor based on tinymce3 is a central part of my application. Instead of QWebkit there is now QWebEngine, based on chromium, a very fine solution...
Overload 137 is now available
ACCU’s Overload journal of February 2017 is out. It contains the following C++ related articles.
Overload 137 is now available
From the journal:
Mean Properties
Property based testing is all the rage. Russel Winder walks us through an example of properties an arithmetic mean function should have. by Russel Winder
The Importance of Back-of-Envelope Estimates
Guestimate questions make many people grumble. Sergey Ignatchenko reminds us why they matter. by Sergey Ignatchenko
Multiprocessing and Clusters in Python
Multiprocessing is possible in Python. Silas S. Brown shows us various ways. by Silas S. Brown
doctest – the Lightest C++ Unit Testing Framewor
C++ has many unit testing frameworks. Viktor Kirilov introduces doctest. by Viktor Kirilov
Correct Integer Operations with Minimal Runtime Penalties
Results of C++ integer operations are not guaranteed to be arithmetically correct. Robert Ramey introduces a library to enforce correct behaviour. by Robert Ramey
Quick Q: why there is no data-race in the following case?
Quick A: No write is triggered so no data race occurs.
Recently on SO:
why there is no data-race in the following case?
Data races are not static properties of your code. They are properties of the actual state of the program at execution time. So while that program could be in a state where the code would produce a data race, that's not the question.
The question is, given the state of the system, will the code cause a data race? And since the program is in a state such that neither thread will write to either variable, then the code will not cause a data race.
Data races aren't about what your code might do. It's about what they will do. Just as a function that takes a pointer isn't undefined behavior just because it uses the pointer without checking for NULL. It is only UB if someone passes a pointer that really is NULL.
C++ Weekly Episode 50: Inheriting Lambdas vs Generic Lambdas—Jason Turner
Episode 50 of C++ Weekly.
Inheriting Lambdas vs Generic Lambdas
by Jason Turner
About the show:
The last episode of C++ Weekly showed why and where we might want to inherit from lambdas and create a merged lambda with the signatures of two or more other lambdas. In this episode Jason compares a merged lambda with a generic lambda and what the pros and cons might be.
2017-02 pre-Kona mailing available
The 2017-02 mailing of new standards papers is now available.
NOTE: Some of these papers have already been posted via this blog. This is the complete list including ones not previously publicized.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup | Disposition |
|---|---|---|---|---|---|---|---|
| SD-1 | 2017 PL22.16/WG21 document list | John Spicer | 2017-02-08 | 2017-02 | |||
| 2017-02 pre-Kona | |||||||
| N4632 | PL22.16/WG21 draft agenda: 27 Feb - 4 Mar 2017, Kona, HI, US | Clark Nelson | 2016-12-13 | 2017-02 | WG21 | ||
| N4633 | 2017-11 Albuquerque WG21 meeting information | Carter Edwards | 2017-01-09 | 2017-02 | WG21 | ||
| N4634 | PL22.16 2016-11 Issaquah Minutes (final) | Jonathan Wakely | 2017-01-18 | 2017-02 | WG21 | ||
| N4635 | Pre-Kona WG21 Telecon Agenda | Herb Sutter | 2017-01-23 | 2017-02 | WG21 | ||
| N4636 | 2017-07-10-15 ISO WG21 C++ Standard Meeting in Toronto | Michael Wong, Botond Ballo, JF Bastien, Hubert Tong, Patrice Roy, Tony Van Eerd, Duncan Exon Smith | 2017-02-06 | 2017-02 | WG21 | ||
| N4637 | Working Draft, Extensions to C++ for Modules | Gabriel Dos Reis | 2017-02-03 | 2017-02 | N4610 | WG21 | |
| N4638 | Editor's Report for the Module TS | Gabriel Dos Reis | 2017-02-03 | 2017-02 | WG21 | ||
| N4639 | Editor's Report -- Working Draft, Standard for Programming Language C++ | Richard Smith | 2017-02-06 | 2017-02 | WG21 | ||
| N4640 | Working Draft, Standard for Programming Language C++ | Richard Smith | 2017-02-06 | 2017-02 | N4618 | WG21 | |
| N4641 | Working Draft, C++ extensions for Concepts | Andrew Sutton | 2017-02-05 | 2017-02 | N4630 | WG21 | |
| N4642 | Editor's report for the Concepts TS | Andrew Sutton | 2017-02-05 | 2017-02 | WG21 | ||
| P0045R1 | Qualified std::function signatures | David Krauss | 2017-02-06 | 2017-02 | P0045R0 | Library Evolution | |
| P0052R3 | Generic Scope Guard and RAII Wrapper for the Standard Library | Peter Sommerlad, Andrew L. Sandoval | 2017-02-06 | 2017-02 | P0052R2 | Library | |
| P0059R3 | A proposal to add a ring span to the standard library | Guy Davidson, Arthur O'Dwyer | 2017-02-05 | 2017-02 | P0059R2 | SG14, Library Evolution | |
| P0082R2 | For Loop Exit Strategies (Revision 3) | Alan Talbot | 2017-02-06 | 2017-02 | P0082R1 | Evolution | |
| P0091R4 | Template argument deduction for class templates (Rev. 7) | Mike Spertus, Faisal Vali, Richard Smith | 2016-06-24 | 2017-02 | P0091R3 | Evolution | |
| P0103R1 | Overflow-Detecting and Double-Wide Arithmetic Operations | Lawrence Crowl | 2017-02-05 | 2017-02 | P0103R0 | Numerics | |
| P0104R1 | Multi-Word Integer Operations and Types | Lawrence Crowl | 2017-02-05 | 2017-02 | P0104R0 | Numerics | |
| P0105R1 | Rounding and Overflow in C++ | Lawrence Crowl | 2017-02-05 | 2017-02 | P0105R0 | Numerics | |
| P0122R4 | span: bounds-safe views for sequences of objects | Neil MacIntosh | 2017-02-06 | 2017-02 | P0122R3 | Library | |
| P0165R4 | C++ Standard Library Issues to be moved in Issaquah | Marshall Clow | 2017-02-06 | 2017-02 | P0165R3 | Library | |
| P0190R3 | Proposal for New memory order consume Definition | Paul E. McKenney, Michael Wong, Hans Boehm, Jens Maurer, Jeffrey Yasskin, JF Bastien | 2017-02-05 | 2017-02 | P0190R2 | Concurrency | |
| P0194R3 | Static reflection | Matúš Chochlík, Axel Naumann, David Sankel | 2017-02-06 | 2017-02 | P0194R2 | Reflection, Evolution | |
| P0214R3 | Data-Parallel Vector Types & Operations | Matthias Kretz | 2017-02-06 | 2017-02 | P0214R2 | Library Evolution | |
| P0233R3 | Hazard Pointers: Safe Reclamation for Optimistic Concurrency | Maged M. Michael, Michael Wong, Paul McKenney, Arthur O'Dwyer, David Hollman | 2017-02-06 | 2017-02 | P0233R2 | Concurrency, SG14, Library Evolution | |
| P0237R5 | Wording for fundamental bit manipulation utilities | Vincent Reverdy, Robert J. Brunner | 2017-02-06 | 2017-02 | P0237R4 | Library Evolution, SG14, Numerics | |
| P0260R1 | C++ Concurrent Queues | Lawrence Crowl | 2017-02-05 | 2017-02 | P0260R0 | Concurrency | |
| P0261R2 | C++ Distributed Counters | Lawrence Crowl | 2017-02-05 | 2017-02 | P0261R1 | Concurrency | |
| P0267R3 | A Proposal to Add 2D Graphics Rendering and Display to C++, | Michael McLaughlin, Herb Sutter, Jason Zink | 2017-02-06 | 2017-02 | P0267R2 | Library Evolution | |
| P0275R1 | A Proposal to add Classes and Functions Required for Dynamic Library Load | Antony Polukhin | 2017-01-28 | 2017-02 | P0275R0 | Library Evolution | |
| P0288R1 | A polymorphic wrapper for all Callable objects | David Krauss | 2017-02-06 | 2017-02 | P0288R0 | Library Evolution | |
| P0316R0 | allocate_unique and allocator_delete | Miro Knejp | 2017-02-01 | 2017-02 | Library Evolution | ||
| P0339R2 | polymorphic_allocator<void> as a vocabulary type | Pablo Halpern, Dietmar Kühl | 2017-02-04 | 2017-02 | P0339R1 | Library Evolution | |
| P0352R1 | Smart References through Delegation (2nd revision) | Hubert Tong, Faisal Vali | 2017-02-06 | 2017-02 | P0352R0 | Evolution | |
| P0355R2 | Extending <chrono> to Calendars and Time Zones | Howard Hinnant | 2017-02-04 | 2017-02 | P0355R1 | Library Evolution | |
| P0385R2 | Static reflection: Rationale, design and evolution | Matúš Chochlík, Axel Naumann, David Sankel | 2017-02-06 | 2017-02 | P0385R1 | Reflection, Evolution | |
| P0408R1 | Efficient Access to basic stringbuf's Buffer | Peter Sommerlad | 2017-02-03 | 2017-02 | P0408R0 | Library Evolution, Library | |
| P0433R1 | Toward a resolution of US7 and US14: Integrating template deduction for class templates into the standard library | Mike Spertus, Walter E. Brown | 2017-02-06 | 2017-02 | P0433R0 | Library Evolution, Library | |
| P0443R1 | A Unified Executors Proposal for C++ | Jared Hoberock, Michael Garland, Chris Kohlhoff, Chris Mysen, Carter Edwards, Gordon Brown | 2017-01-06 | 2017-02 | P0443R0 | Concurrency | |
| P0447R1 | Introduction of std::colony to the standard library | Patrice Roy, Guy Davidson, Matthew Bentley | 2016-11-21 | 2017-02 | P0443R0 | Library Evolution, SG14 | |
| P0461R1 | Proposed RCU C++ API | Paul E. McKenney, Maged Michael, Michael Wong, Isabella Muerte, Arthur O'Dwyer, David Hollman | 2017-02-05 | 2017-02 | P0461R0 | Concurrency | |
| P0462R1 | Marking memory order consume Dependency Chains | Paul E. McKenney, Torvald Riegel, Jeff Preshing, Hans Boehm, Clark Nelson, Olivier Giroux, Lawrence Crowl, JF Bastien, Micheal Wong | 2017-02-05 | 2017-02 | P0462R0 | Concurrency | |
| P0467R1 | Iterator Concerns for Parallel Algorithms | Alisdair Meredith | 2016-11-10 | 2017-02 | P0467R0 | Concurrency, Library | |
| P0479R1 | Attributes for Likely and Unlikely Branches | Clay Trychta | 2017-02-05 | 2017-02 | P0479R0 | Evolution, SG14 | |
| P0492R1 | Proposed Resolution of C++17 National Body Comments for Filesystem | Beman Dawes, S. Davis Herring, Nicolai Josuttis, Jason Liu, Billy O'Neal, P.J. Plauger, Jonathan Wakely | 2017-02-06 | 2017-02 | P0492R0 | Library | |
| P0501R0 | C++ Module TS Issues List | Gabriel Dos Reis | 2017-02-06 | 2017-02 | Core | ||
| P0506R0 | use string_view for library function parameters instead of const string & / const char * | Peter Sommerlad | 2017-02-04 | 2017-02 | Library, Library Evolution | ||
| P0515R0 | Consistent comparison | Herb Sutter | 2017-02-05 | 2017-02 | Evolution, Library Evolution | ||
| P0518R0 | Allowing copies as arguments to function objects given to parallel algorithms in response to CH11 | David S. Hollman, Jonathan Liffander, Michael Wong, Detlef Vollmann | 2017-01-31 | 2017-02 | Concurrency | ||
| P0527R0 | Implicitly move from rvalue references in return statements | David Stone | 2017-02-05 | 2017-02 | Evolution | ||
| P0532R0 | On std::launder() | Nico Josuttis | 2017-01-14 | 2017-02 | Core, Evolution, Library Evolution, Library | ||
| P0533R0 | constexpr for <cmath> and <cstdlib> | Edward J. Rosten / Oliver J. Rosten | 2017-01-25 | 2017-02 | SG6, Library Evolution | ||
| P0534R0 | call/cc (call-with-current-continuation): A low-level API for stackful context switching | Oliver Kowalke | 2017-02-04 | 2017-02 | Concurrency, Library Evolution | ||
| P0535R0 | Generalized Unpacking and Parameter Pack Slicing | Matthew Woehlke | 2017-02-03 | 2017-02 | Evolution | ||
| P0536R0 | Implicit Return Type and Allowing Anonymous Types as Return Values | Matthew Woehlke | 2017-02-03 | 2017-02 | Evolution | ||
| P0537R0 | Allow Attributes on Template Explicit Instantiations | Matthew Woehlke | 2016-08-23 | 2017-02 | Evolution | ||
| P0538R0 | A Qualified Replacement for #pragma once | Matthew Woehlke | 2016-10-27 | 2017-02 | Evolution | ||
| P0539R0 | Wide Integer Class | Antony Polukhin | 2017-01-28 | 2017-02 | Numerics | ||
| P0540R0 | A Proposal to Add split/join of string/string_view to the Standard Library | Laurent Navarro | 2017-01-21 | 2017-02 | Library Evolution | ||
| P0541R0 | Post-Increment on Input and Output Iterators | Eric Niebler | 2017-02-02 | 2017-02 | Library Evolution | ||
| P0542R0 | Support for contract based programming in C++ | J. Daniel Garcia | 2017-02-05 | 2017-02 | Evolution, Core | ||
| P0543R0 | Saturation arithmetic | Jens Maurer | 2017-01-03 | 2017-02 | Numerics, Library Evolution | ||
| P0544R0 | User Injection of Filesystems | Titus Winters, Geoffrey Romer | 2017-02-01 | 2017-02 | Library Evolution | ||
| P0545R0 | Supporting offsetof for Stable-layout Classes | Andrey Semashev | 2016-10-23 | 2017-02 | Library Evolution, Library | ||
| P0546R0 | Span - foundation for the future | Carter Edwards, Bryce Lelbach | 2017-01-26 | 2017-02 | Library Evolution | ||
| P0547R0 | Assorted Object Concept Fixes | Eric Niebler | 2017-02-02 | 2017-02 | Library | ||
| P0548R0 | common_type and duration | Walter E. Brown | 2017-02-01 | 2017-02 | Library | ||
| P0549R0 | Adjuncts to std::hash | Walter E. Brown | 2017-02-01 | 2017-02 | Library Evolution | ||
| P0550R0 | Transformation Trait uncvref | Walter E. Brown | 2017-02-01 | 2017-02 | Library Evolution | ||
| P0551R0 | Thou Shalt Not Specialize std Function Templates! | Walter E. Brown | 2017-02-01 | 2017-02 | Library Evolution | ||
| P0552R0 | enable_if vs. requires | Walter E. Brown | 2017-02-01 | 2017-02 | WG21 | ||
| P0553R0 | Bit Operations | Jens Maurer | 2017-02-05 | 2017-02 | Numerics, Library Evolution | ||
| P0554R0 | Composition of Arithmetic Types | John McFarlane | 2017-02-06 | 2017-02 | Numerics, SG14 | ||
| P0555R0 | string_view for source_location | Axel Naumann | 2017-01-30 | 2017-02 | Library Evolution | ||
| P0556R0 | Integral power-of-2 operations | Jens Maurer | 2017-02-05 | 2017-02 | Numerics, Library Evolution | ||
| P0557R0 | Concepts: The Future of Generic Programming | Bjarne Stroustrup | 2017-01-31 | 2017-02 | WG21 | ||
| P0558R0 | Resolving atomic<T> named base class inconsistencies | Billy O'Neal | 2017-02-03 | 2017-02 | Concurrency, Library | ||
| P0559R0 | Operating principles for evolving C++ | JC van Winkel, Jose Daniel Garcia, Ville Voutilainen, Roger Orr, Michael Wong, Sylvain Bonnal | 2017-01-31 | 2017-02 | WG21 | ||
| P0560R0 | Class template deduction guides for "diamond operators" | Miro Knejp | 2017-02-01 | 2017-02 | Library Evolution | ||
| P0561R0 | RAII Interface for Deferred Reclamation | Geoffrey Romer | 2017-02-03 | 2017-02 | Concurrency | ||
| P0562R0 | Initialization List Symmetry | Alan Talbot | 2017-02-05 | 2017-02 | Evolution | ||
| P0563R0 | Vector Front Operations | Alan Talbot | 2017-02-05 | 2017-02 | Library Evolution | ||
| P0564R0 | Wording for three-way comparisons | Jens Maurer | 2017-02-06 | 2017-02 | Evolution | ||
| P0565R0 | Prefix for operator as a pack generator and postfix operator[] for pack indexing | Bengt Gustafsson | 2017-02-02 | 2017-02 | Evolution | ||
| P0566R0 | Proposed Wording for Concurrent Data Structures: Hazard Pointer and Read-Copy-Update (RCU) | Michael Wong, Maged M. Michael, Paul McKenney | 2017-02-06 | 2017-02 | Concurrency, SG14, Library Evolution, Library | ||
| P0567R0 | Asynchronous managed pointer for Heterogeneous computing | Gordon Brown, Ruyman Reyes, Michael Wong | 2017-01-30 | 2017-02 | Concurrency, SG14 | ||
| P0568R0 | Towards Better Embedded programming support for C++ and an update on the status of SG14, two years later.Towards Better Embedded programming support for C++ and an update on the status of SG14, two years later | Michael Wong | 2017-02-06 | 2017-02 | SG14, WG21 | ||
| P0569R0 | SG5: Transactional Memory (TM) Meeting Minutes 2016/07/18-2016/10/10 | Michael Wong | 2017-02-06 | 2017-02 | SG5 | ||
| P0570R0 | SG14: Low Latency Meeting Minutes 2016/12/14-2017/02/01 | Michael Wong | 2017-02-06 | 2017-02 | SG14 | ||
| P0571R0 | Type Requirements for <numeric> Algorithms | Bryce Adelstein Lelbach | 2017-02-02 | 2017-02 | Concurrency, Library Evolution, Library | ||
| P0572R0 | bit_sizeof and bit_offsetof | Alex Christensen | 2017-02-03 | 2017-02 | Evolution | ||
| P0573R0 | Abbreviated Lambdas for Fun and Profit | Barry Revzin | 2017-02-03 | 2017-02 | Evolution | ||
| P0574R0 | Algorithm Complexity Constraints and Parallel Overloads | Anthony Williams | 2017-02-04 | 2017-02 | Concurrency, Library | ||
| P0575R0 | Core Language Working Group "ready" Issues for the February, 2016 (Kona) meeting | William M. Miller | 2017-02-06 | 2017-02 | Core | ||
| P0576R0 | Core Language Working Group "tentatively ready" Issues for the February, 2016 (Kona) meeting | William M. Miller | 2017-02-06 | 2017-02 | Core | ||
| P0577R0 | Keep that Temporary! | Zhihao Yuan | 2017-02-02 | 2017-02 | Evolution | ||
| P0578R0 | Static Reflection in a Nutshell | Matúš Chochlík, Axel Naumann, David Sankel | 2017-02-04 | 2017-02 | Evolution, Library Evolution | ||
| P0579R0 | Constexpr for <experimental/ranges/iterator> | Casey Carter | 2017-01-23 | 2017-02 | Library | ||
| P0581R0 | Standard Library Modules | Gabriel Dos Reis, Billy O'Neal, Stephan T. Lavavej, Jonathan Wakely | 2017-02-06 | 2017-02 | Evolution, Library Evolution | ||
| P0583R0 | std::byte is the correct name | Gabriel Dos Reis | 2017-02-04 | 2017-02 | WG21 | ||
| P0587R0 | Concepts TS revisited | Richard Smith, James Dennett | 2017-02-05 | 2017-02 | Evolution | ||
| P0588R0 | Simplifying implicit lambda capture | Richard Smith, Daveed Vandevoorde | 2017-02-05 | 2017-02 | Evolution | ||
| P0589R0 | Tuple-based for loops | Andrew Sutton | 2017-02-04 | 2017-02 | Evolution | ||
| P0590R0 | A design static reflection | Andrew Sutton, Herb Sutter | 2017-02-05 | 2017-02 | Reflection | ||
| P0591R0 | Utility functions to implement uses-allocator construction | Pablo Halpern | 2017-02-05 | 2017-02 | Library Evolution | ||
| P0592R0 | To boldly suggest an overall plan for C++20 | Ville Voutilainen | 2017-02-05 | 2017-02 | WG21 | ||
| P0593R0 | What to do with buffers that are not arrays, and undefined behavior thereof? | Ville Voutilainen | 2017-02-05 | 2017-02 | WG21 | ||
| P0594R0 | Relative comparisons and std::less<T*> | Ville Voutilainen | 2017-02-05 | 2017-02 | WG21 | ||
| P0595R0 | The "constexpr" Operator | Daveed Vandevoorde | 2017-02-02 | 2017-02 | Evolution | ||
| P0596R0 | std::constexpr_trace and std::constexpr_assert | Daveed Vandevoorde | 2017-02-02 | 2017-02 | Evolution | ||
| P0597R0 | std::constexpr_vector<T> | Daveed Vandevoorde | 2017-02-02 | 2017-02 | Evolution | ||
| P0598R0 | Reflect Through Values Instead of Types | Daveed Vandevoorde | 2017-02-02 | 2017-02 | Reflection, Evolution | ||
| P0599R0 | US140: noxecept for hash functions | Nicolai Josutti | 2017-01-14 | 2017-02 | Library | ||
| P0600R0 | applying [[nodiscard]] for C++17 | Nicolai Josutti | 2017-02-06 | 2017-02 | Library Evolution, Library | ||
| P0601R0 | Establishing a direction for SIMD-enabled functions | Clark Nelson | 2017-02-06 | 2017-02 | Concurrency, Evolution | ||
CppChat[10]: The Great Functor Debate
CppChat:
CppChat[10]: The Great Functor Debate (Ben, Jackie, and Jonathan)
with Ben Dean, Jackie Kay, Jonathan Müller, and Jon Kalb
From the chat:
Ben, Jackie, Jonathan, and Jon discuss Jackie's blog about using the word functor and foonathan's latest blog post about policy objects. Ben discusses using variant for state machines and Jon rants.
CppCast Episode 88: Microsoft's STL with Stephan T. Lavavej
Episode 88 of CppCast the only podcast for C++ developers by C++ developers. In this episode Rob and Jason are joined by Stephan T. Lavavej to talk about Microsoft's STL and some of the changes to the Library coming in the VS 2017 release.
CppCast Episode 88: Microsoft's STL with Stephan T. Lavavej
by Rob Irving and Jason Turner
About the interviewee:
Stephan T. Lavavej is a Principal Software Engineer at Microsoft, maintaining Visual C++'s implementation of the C++ Standard Library since 2007. He also designed a couple of C++14 features: make_unique and the transparent operator functors. He likes his initials (which people can actually spell) and cats (although he doesn't own any).