October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By fj | Oct 24, 2019 12:27 PM | Tags: None
How would you look for an item in a tuple by the item's type, and return the item's index within that tuple?
Access tuple-like container by type to return an index
by Krzysztof Ostrowski
From the article:
Presentation of a technique that composes an application of a lazy fold expression, and an idea of type embellishment that introduces an implicit context in which the current tuple element is embedded.
By philsquared | Oct 24, 2019 12:20 PM | Tags: None
The Call for Speakers is now open, and will run until the end of November.
by C++ on Sea
by C++ on Sea
From the article:
If you're interested in presenting a 60 minute or 90 minute talk, or a one day workshop, please visit the above link to go to the Call For Speakers page for more information and a link to the Speaker Portal.
By Adrien Hamelin | Oct 22, 2019 11:35 AM | Tags: experimental advanced
Very interesting.
Eliminating the Static Overhead of Ranges
by vector-of-bool
From the article:
C++20 is slated to receive Ranges, which is probably the most significant library update since the STL itself was introduced...
By Meeting C++ | Oct 22, 2019 04:58 AM | Tags: meetingcpp intermediate events conference community c++17 c++14 c++11 basics
Some details on the keynotes of this years Meeting C++ conference
Keynote details for Meeting C++ 2019
by Jens Weller
From the article:
With just a few weeks left to Meeting C++ 2019, its time for a closer look at the keynotes!
By Thomas Young | Oct 20, 2019 08:57 AM | Tags: None
Good practices for setting up include files are key to keeping large code-bases manageable, in pre-modules C++, and this article presents 15 rules to keep you on the right track.
C/C++ Include Guidelines
by Thomas Young
From the article:
The rules listed here are relatively mechanical, by which I mean that these are things that can be applied locally to individual bits of source code, without strokes of genius or flashes of inspiration, but with the possibility to nevertheless significantly improve code organisation, which is useful particularly in the case of large legacy code bases.
By Ansel Sermersheim | Oct 20, 2019 08:55 AM | Tags: None
New video on the CopperSpice YouTube Channel:
std::variant
by Barbara Geller and Ansel Sermersheim
About the video:
In this video, we discuss the std::variant class and its relationship to C++ unions. We explore the drawbacks and constraints of the union abstraction in C++, how they changed in C++11, and how variant addresses many of these shortcomings.
Please take a look and remember to subscribe!
By zebedee | Oct 20, 2019 08:53 AM | Tags: None
A small Gherkin DSL parser that generates stub code
Cornichon
by Zebedee Mason
From the article:
The supported frameworks are:
- cpp/cppunittest - Microsoft's Visual C++ test framework
- cpp/googletest - Google Test
By Adrien Hamelin | Oct 15, 2019 12:00 PM | Tags: stl intermediate
Simple and sweet.
How to Merge Consecutive Elements in a C++ Collection
by Jonathan Boccara
From the article:
Merging identical consecutive elements in a collection is a recurring need, in C++ or elsewhere in programming.
For example, we could want to aggregate a collection of hourly results into a collection of daily results: all the results of each day get aggregated into one for that day. In this case, being “identical” means being on the same day, and “aggregating” means taking two results with a common date, and creating a result at this date and with the sum of their amounts...
By Adrien Hamelin | Oct 15, 2019 11:57 AM | Tags: community
ACCU’s Overload journal of October 2019 is out. It contains the following C++ related articles.
Overload 153 is now available
From the journal:
Predictions and Predilections.
Forecasting the future is difficult. Frances Buontempo has a foreboding sense that a lack of impartially makes things even harder.Scenarios Using Custom DSLs.
Natural-language BDD can be hard to maintain. Liz Keogh demonstrates a simple code-based alternative.OOP Is not Essential.
People tend to love or hate Object Oriented Programming. Lucian Teodorescu considers a recent OOP claim.I Come Here Not to Bury Delphi, But to Praise It.
What helps a programming language gain traction? Patrick Martin remembers why he used to use Delphi.C++ Pipes.
Expressive code can make life easier. Jonathan Boccara demonstrates fluent pipelines for collections in C++.
By Blog Staff | Oct 15, 2019 11:54 AM | Tags: None
The 2019-10 mailing of new standards papers is now available.
| P1750R1 | A Proposal to Add Process Management to the C++ Standard Library | Klemans Morgenstern, Jeff Garland, Elias Kosunen, Fatih Bakir | 2019-10-07 | 2019-10 | P1750R0 | SG1, LEWGI | |
| P1772R1 | Variadic overload sets and overload sequences | Vincent Reverdy | 2019-10-06 | 2019-10 | P1772R0 | SG7, EWGI | |
| P1774R1 | Portable optimisation hints | Timur Doumler | 2019-10-06 | 2019-10 | P1774R0 | SG21, EWGI, Evolution | |
| P1787R2 | Declarations and where to find them | S. Davis Herring | 2019-10-05 | 2019-10 | P1787R1 | Core | |
| P1795R1 | System topology discovery for heterogeneous & distributed computing | Gordon Brown, Ruyman Reyes, Michael Wong, Mark Hoemmen, Jeff Hammond, Tom Scogland, Domagoj Šarić | 2019-10-08 | 2019-10 | P1795R0 | SG1, SG14 | |
| P1820R0 | Recommendations for a compromise on handling errors and cancellations in executors | Gordon Brown | 2019-10-08 | 2019-10 | SG1, Library Evolution | ||
| P1830R1 | std::dependent_false | Ruslan Arutyunyan | 2019-10-07 | 2019-10 | P1830R0 | LEWGI | |
| P1839R1 | Accessing Object Representations | Krystian Stasiowski | 2019-10-02 | 2019-10 | P1839R0 | Core | |
| P1847R1 | Make declaration order layout mandated | Pal Balog | 2019-10-01 | 2019-10 | P1847R0 | Evolution | |
| P1854R0 | Conversion to execution encoding should not lead to loss of meaning | Corentin Jabot | 2019-10-06 | 2019-10 | SG16, Evolution | ||
| P1855R0 | Make <compare> freestanding | Ben Craig, Bryce Adelstein Lelbach | 2019-10-05 | 2019-10 | Library Evolution | ||
| P1856R0 | Bit operations do not work on bytes: a generic fix | Vincent Reverdy | 2019-10-07 | 2019-10 | Library Evolution, Library | ||
| P1857R0 | Modules Dependency Discovery | Michael Spencer | 2019-10-07 | 2019-10 | SG2, SG15, Evolution | ||
| P1857R1 | Modules Dependency Discovery | Michael Spencer | 2019-10-07 | 2019-10 | P1857R0 | SG2, SG15, Evolution | |
| P1858R0 | Generalized pack declaration and usage | Barry Revzin | 2019-10-07 | 2019-10 | Evolution | ||
| P1859R0 | Standard terminology for execution character set encodings | Steve Downey | 2019-10-09 | 2019-10 | SG16, Evolution, Core | ||
| P1860R0 | C++ Networking Must Be Secure By Default | JF Bastien, Alex Christensen | 2019-10-07 | 2019-10 | Library Evolution | ||
| P1861R0 | Secure Connections in Networking TS | JF Bastien, Alex Christensen | 2019-10-07 | 2019-10 | Library Evolution | ||
| P1862R0 | Ranges adaptors for non-copyable iterators | Corentin Jabot | 2019-10-06 | 2019-10 | Library Evolution, Library | ||
| P1865R0 | Add max() to latch and barrier | David Olsen, Olivier Giroux | 2019-09-30 | 2019-10 | Library Evolution, Library | ||
| P1868R0 | ? width: clarifying units of width and precision in std::format | Victor Zverovich, Zach Laine | 2019-10-05 | 2019-10 | SG16, Library Evolution | ||
| P1869R0 | Rename 'condition_variable_any' interruptible wait methods | Tomasz Kamiński, Michał Dominiak | 2019-10-01 | 2019-10 | Library Evolution | ||
| P1870R0 | forwarding-range is too subtle | Barry Revzin | 2019-10-07 | 2019-10 | Library Evolution | ||
| P1871R0 | Should concepts be enabled or disabled? | Barry Revzin | 2019-10-07 | 2019-10 | Library Evolution | ||
| P1872R0 | span should have size_type, not index_type | Nevin Liber | 2019-10-07 | 2019-10 | Library Evolution | ||
| P1873R0 | remove.dots.in.module.names | Michael Spencer | 2019-10-07 | 2019-10 | SG2, Evolution | ||
| P1873R1 | remove.dots.in.module.names | Michael Spencer | 2019-10-07 | 2019-10 | P1873R0 | SG2, Evolution | |
| P1874R0 | Dynamic Initialization Order of Non-Local Variables in Modules | Michael Spencer | 2019-10-07 | 2019-10 | SG2, Evolution | ||
| P1875R0 | Transactional Memory Lite Support in C++ | Michael Spear, Hans Boehm, Victor Luchangco, Michael Scott, Michael Wong | 2019-10-07 | 2019-10 | SG1 | ||
| P1876R0 | All The Module Names | Rene Rivera | 2019-10-04 | 2019-10 | SG15 | ||
| P1876R1 | All The Module Names | Rene Rivera | 2019-10-08 | 2019-10 | P1876R0 | SG2 | |
| P1877R0 | Saving Private Ranges: Recovering Lost Information from Comparison and Predicate Algorithms | JeanHeyd Meneide | 2019-10-07 | 2019-10 | Library Evolution | ||
| P1878R0 | Constraining Readable Types | Eric Niebler, Casey Carter | 2019-10-04 | 2019-10 | Library | ||
| P1879R0 | Please Don't Rewrite My String Literals | Zach Laine | 2019-10-06 | 2019-10 | SG16, EWGI | ||
| P1880R0 | uNstring Arguments Shall Be UTF-N Encoded | Zach Laine | 2019-10-06 | 2019-10 | SG16, LEWGI | ||
| P1881R0 | Epochs: a backward-compatible language evolution mechanism | Vittorio Romeo | 2019-10-06 | 2019-10 | EWGI | ||
| P1882R0 | Addition of a filter to recursive_directory_iterator | Noel Tchidjo Moyo | 2019-09-26 | 2019-10 | EWGI | ||
| P1883R0 | Walkthrough of P1031s file_handle for LEWG-I | Niall Douglas | 2019-09-26 | 2019-10 | LEWGI | ||
| P1885R0 | Naming Text Encodings to Demystify Them | Corentin Jabot | 2019-10-06 | 2019-10 | SG16, Library Evolution | ||
| P1886R0 | Error speed benchmarking | Ben Craig | 2019-10-05 | 2019-10 | SG14, Direction Group | ||
| P1887R0 | Typesafe Reflection on attributes | Corentin Jabot | 2019-10-06 | 2019-10 | SG7 | ||
| P1888R0 | Executors without exception handling support | Matti Rintala, Matti Rintala, Michael Wong, David S. Hollman, Pekka Jääskeläinen | 2019-10-07 | 2019-10 | SG1 | ||
| P1889R0 | C++ Numerics Work In Progress | Alexander Zaitsev, Antony Polukhin | 2019-10-01 | 2019-10 | SG6 | ||
| P1890R0 | C++ Numerics Work In Progress Issues | Antony Polukhin, Alexander Zaitsev | 2019-10-01 | 2019-10 | SG6 | ||
| P1891R0 | The Linear-Algebra Effort | Guy Davidson, Mark Hoemmen, David Hollman, Bob Steagall, Christian Trott | 2019-10-13 | 2019-10 | SG6, SG14, SG19, Library Evolution | ||
| P1892R0 | Extended locale-specific presentation specifiers for std::format | Peter Brett | 2019-10-07 | 2019-10 | SG16, LEWGI | ||
| P1893R0 | Proposal of Contract Primitives | Andrew Tomazos | 2019-10-01 | 2019-10 | SG21 | ||
| P1894R0 | Proposal of std::upto, std::indices and std::enumerate | Andrew Tomazos | 2019-10-02 | 2019-10 | LEWGI | ||
| P1895R0 | tag_invoke: A general pattern for supporting customisable functions | Lewis Baker, Eric Niebler, Kirk Shoop | 2019-10-08 | 2019-10 | Library Evolution | ||
| P1896R0 | SG16: Unicode meeting summaries 2019/06/12 - 2019/09/25 | Tom Honermann | 2019-10-02 | 2019-10 | SG16 | ||
| P1897R0 | Towards C++23 executors: An initial set of algorithms | Lee Howes | 2019-10-07 | 2019-10 | SG1 | ||
| P1898R0 | Forward progress delegation for executors | Lee Howes | 2019-10-07 | 2019-10 | SG1 | ||
| P1899R0 | stride_view | Christopher Di Bella | 2019-10-07 | 2019-10 | Library Evolution | ||
| P1900R0 | Concepts-Adjacent Problems | Barry Revzin | 2019-10-07 | 2019-10 | Evolution | ||
| P1901R0 | Enabling the Use of weak_ptr as Keys in Unordered Associative Containers | Daryl Haresign | 2019-10-03 | 2019-10 | Library Evolution | ||
| P1902R0 | Missing feature-test macros 2018-2019 | Barry Revzin | 2019-10-07 | 2019-10 | Evolution, Library Evolution | ||
| P1905R0 | In-Source Mechanism to Identify Importable Headers | Corentin Jabot | 2019-10-06 | 2019-10 | SG15, Evolution | ||
| P1906R0 | Provided operator= return lvalue-ref on rvalue | Peter Sommerlad | 2019-10-07 | 2019-10 | SG12, EWGI, Evolution, Core | ||
| P1907R0 | Inconsistencies with non-type template parameters | Jens Maurer | 2019-10-07 | 2019-10 | Evolution | ||
| P1908R0 | Reserving Attribute Names for Future Use | Corentin Jabot | 2019-10-06 | 2019-10 | Evolution | ||
| P1912R0 | Interconvertible object representations | Timur Doumler | 2019-10-06 | 2019-10 | EWGI, Evolution | ||
| P1913R0 | Comments on Audio Devices | Frank Birbacher | 2019-10-06 | 2019-10 | SG13 | ||
| P1914R0 | On the names of shift algorithms | Vincent Reverdy | 2019-10-07 | 2019-10 | Library Evolution, Library | ||
| P1915R0 | Expected Feedback from simd in the Parallelism TS 2 | Matthias Kretz | 2019-10-07 | 2019-10 | SG1, Library Evolution | ||
| P1916R0 | There might not be an elegant OOTA fix | David Goldblatt | 2019-10-07 | 2019-10 | SG1 | ||
| P1917R0 | C++ Library Issues to be moved in Belfast | Marshall Clow | 2019-10-07 | 2019-10 | WG21 | ||
| P1919R0 | Expanding the Rights in SD-8 | Nevin Liber | 2019-10-07 | 2019-10 | Library Evolution | ||
| P1920R0 | Proposal of Namespace Templates | Andrew Tomazos | 2019-10-07 | 2019-10 | EWGI | ||
| P1921R0 | What's in a Name? | Nevin Liber | 2019-10-07 | 2019-10 | Library Evolution | ||
| P1922R0 | Making std::list constexpr | Alexander Zaitsev | 2019-10-07 | 2019-10 | LEWGI | ||
| P1923R0 | Making std::deque constexpr | Alexander Zaitsev | 2019-10-07 | 2019-10 | LEWGI | ||
| P1924R0 | Making std::stack constexpr | Alexander Zaitsev | 2019-10-07 | 2019-10 | LEWGI | ||
| P1925R0 | Making std::queue constexpr | Alexander Zaitsev | 2019-10-07 | 2019-10 | LEWGI | ||
| P1926R0 | Making std::priority_queue constexpr | Alexander Zaitsev | 2019-10-07 | 2019-10 | LEWGI | ||
| P1927R0 | Add std::is_partitioned_until algorithm | Alexander Zaitsev | 2019-10-07 | 2019-10 | LEWGI | ||
| P1928R0 | Merge data-parallel types from the Parallelism TS 2 | Matthias Kretz | 2019-10-07 | 2019-10 | SG1 | ||
| P1929R0 | Making std::forward_list constexpr | Alexander Zaitsev | 2019-10-07 | 2019-10 | LEWGI | ||
| P1930R0 | Towards a standard unit systems library | Vincent Reverdy | 2019-10-07 | 2019-10 | SG6, LEWGI | ||
| P1932R0 | Extension of the C++ random number generators | Pavel Dyakov, Ilya Burylov; Ruslan Arutyunyan; Andrey Nikolaev | 2019-10-07 | 2019-10 | SG6 | ||
| P1933R0 | Suggestions for bulk_execute | Jared Hoberock | 2019-10-07 | 2019-10 | SG1 | ||
| P1936R0 | Dependent Static Assertion | Ruslan Arutyunyan | 2019-10-07 | 2019-10 | EWGI | ||
| P1937R0 | Fixing inconsistencies between `constexpr` and `consteval` functions | David Stone | 2019-10-07 | 2019-10 | Evolution | ||
| P1938R0 | if consteval | Barry Revzin, Daveed Vandevoorde, Richard Smith | 2019-10-10 | 2019-10 | Evolution | ||
| P1943R0 | Networking TS changes to improve completion token flexibility and performance | Christopher Kohlhoff | 2019-10-07 | 2019-10 | SG1, Library Evolution |