Physical Units and a System of Quantities

Mateusz Pusz joins Phil and new guest co-host, Anastasia Kazakova. Mateusz talks to us about his physical units (and quantities) library, mp-units, why v2 is a complete redesign compared to the previous version, and how incorporating a system of quantities is so central to this new design. <h3>News</h3> <ul> <li><a href="https://discourse.llvm.org/t/llvm-17-0-1-released/73549">clang 17 released</a></li> <li><a href="https://www.reddit.com/r/cpp/comments/179a5sb/c_videos_released_this_month_october_2023_updated/">Conference videos released in October</a></li> <li><a href="https://www.reddit.com/r/cpp/comments/17a0aue/ama_with_abbas_sabra_principal_engineer_at_sonar/">AMA with Abbas Sabra (automatic/ static analysis)</a></li> <li><a href="https://www.reddit.com/r/cpp/comments/17a5hpq/tell_me_if_my_theory_is_correct/">Is it too hard for junior developers to get on the C++ career ladder (Reddit)</a></li> </ul> <h3>Links</h3> <ul> <li><a href="https://github.com/mpusz/mp-units">mp-units on GitHub</a></li> <li><a href="https://mpusz.github.io/mp-units">mp-units - Documentation</a></li> <li><a href="https://www.youtube.com/watch?v=eUdz0WvOMm0">C++ on Sea 2023 video</a></li> <li><a href="https://en.wikipedia.org/wiki/Mars_Climate_Orbiter">The Mars Climate Orbiter crash</a></li> <li><a href="https://wg21.link/p1935">p1935 - "A C++ Approach to Physical Units"</a></li> <li><a href="https://wg21.link/p2980">p2980 - "A motivation, scope, and plan for a physical quantities and units library"</a></li> <li><a href="https://wg21.link/p2981">p2981 - "Improving our safety with a physical quantities and units library"</a></li> <li><a href="https://wg21.link/p2982">p2982 - "std::quantity as a numeric type"</a></li> <li><a href="https://wg21.link/p3003">p3003 - "The design of a library of number concepts"</a></li> </ul>

00:57:38

AI and Random Numbers

Frances Buontempo joins Phil and returning guest co-host, Matt Godbolt. Frances talks to us about her new book on modern C++ as well as her the topic of her previous book on machine learning. We discuss the differences between LLM-based AI and more statistical approaches, as well as where random numbers fit into all this and the limitations of their current support in C++. <h3>News</h3> <ul> <li><a href="https://cppcon.org/cppcon-2023-program-announced/">CppCon programme announced</a></li> <li><a href="https://www.youtube.com/playlist?list=PL5XXu3X6L7jtXSfqjaQnVXJOCFRyfHrS6">C++ on Sea videos</a></li> <li><a href="https://devblogs.microsoft.com/oldnewthing/2023/08">"Inside STL" - The Old New Things</a></li> <li><a href="https://www.reddit.com/r/cpp/comments/16b4mz2/opensourced_c_projects_that_use_modern_c_features/">Open source C++ projects that use modern C++ features (Reddit)</a></li> </ul> <h3>Links</h3> <ul> <li><a href="https://www.manning.com/books/c-plus-plus-bookcamp">"C++ Bookcamp" (title may change) - Frances' new book</a></li> <li><a href="https://pragprog.com/titles/fbmach/genetic-algorithms-and-machine-learning-for-programmers/">"Genetic Algorithms and Machine Learning for Programmers" - Frances' previous book</a></li> <li><a href="https://accu.org/journals/nonmembers/overload_issue_members/">Overload issues</a> (<a href="http://accu.org/">submit articles on the main ACCU site</a>)</li> <li><a href="https://accu.org/conf-docs/PDFs_2013/paper_bag_certificate.JPG">Frances' paper bag escapology certificate</a></li> <li><a href="https://this1that1whatever.com/miscellany/mind-reader/Shannon-Mind-Reading.pdf">Shannon's mind reading paper</a></li> <li><a href="https://nsandi-corporate.com/media-resources/ernie#">ERNIE (Electronic Random Number Indicator Equipment)</a></li> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p2059r0.pdf">P2059R0 - "Make Pseudo-random Numbers Portable" (defunct)</a></li> <li><a href="https://www.youtube.com/watch?v=xXHT_PGOm2c">"Using, Generating and Testing with Pseudo-Random Numbers" - Frances' ACCU 2023 talk</a></li> <li>"Program your way out of a paper bag" series:<ul> <li><a href="https://accu.org/conf-docs/PDFs_2013/Frances_Buontempo_paperbag.pdf">"How to program your way out of a paper bag" (slides)</a></li> <li><a href="https://www.youtube.com/watch?v=vhhS_MYViW4">"How to Evolve Your Way Out of a Paper Bag" (video)</a></li> <li><a href="https://www.youtube.com/watch?v=6hst54AQR8U">"Diffuse your way out of a paper bag" (video)</a></li> <li><a href="https://www.youtube.com/watch?v=vhhS_MYViW4&t=9s">"How to Evolve Your Way Out of a Paper Bag" (video)</a></li> <li><a href="https://www.youtube.com/watch?v=wlsbg5q0hO0">"Crowd Your Way Out of a Paper Bag" (video)</a></li> </ul> </li> </ul>

00:59:12

Automatic Static Analysis

Abbas Sabra joins Phil and Timur. Abbas talks to us about static analysis, the challenges - and benefits - of analysing C++ code, and a new feature from Sonar that can scan public repos with zero config. <h3>News</h3> <ul> <li><a href="https://www.boost.org/users/history/version_1_83_0.html">Boost 1.83.0 released</a></li> <li><a href="https://github.com/fmtlib/fmt/releases/tag/10.1.0">fmt 10.1 released</a></li> <li><a href="https://reductor.dev/cpp/2023/08/10/the-downsides-of-coroutines.html">The downsides of C++ Coroutines</a></li> </ul> <h3>Links</h3> <ul> <li><a href="https://www.youtube.com/watch?v=Ft3zFk7VPrE">"All the defaults are backwards" - Phil's Lightning Talk</a></li> <li><a href="https://www.sonarsource.com/blog/no-c-static-analysis-does-not-have-to-be-painful/">"No, C++ static analysis does not have to be painful" - Sonar blog</a></li> <li><a href="https://www.youtube.com/watch?v=_EhqQAMscTQ">video showing Sonar's Automatic Analysis in action</a></li> <li><a href="https://community.sonarsource.com/">Sonar Community Discourse forums</a></li> </ul>

00:53:07

Soagen

Mark Gillard joins Timur and guest co-host Jason Turner. Mark talks to us about reflection, SIMD, and his library soagen, a structure-of-arrays generator for C++. <h3>News</h3> <ul> <li><a href="https://www.youtube.com/watch?v=EzmNeAhWqVs">What is Low Latency C++? C++Now 2023, part 1</a></li> <li><a href="https://www.youtube.com/watch?v=5uIsadq-nyk">What is Low Latency C++? C++Now 2023, part 2</a></li> <li><a href="https://devblogs.microsoft.com/oldnewthing/20230802-00/?p=108524">Inside STL: The vector</a></li> <li><a href="https://devblogs.microsoft.com/oldnewthing/20230803-00/?p=108532">Inside STL: The string</a></li> <li><a href="https://tristanbrindle.com/posts/flux-modules-experiments">Experimenting with Modules in Flux</a></li> <li><a href="https://github.com/neek78/pycmake">pycmake</a></li> <li><a href="https://github.com/jeremy-rifkin/cpptrace">cpptrace</a></li> </ul> <h3>Links</h3> <ul> <li><a href="https://github.com/marzer/soagen">Soagen on GitHub</a></li> <li><a href="https://marzer.github.io/soagen/">Soagen documentation</a></li> <li><a href="https://www.youtube.com/watch?v=rX0ItVEVjHc">Mike Acton: Data-Oriented Design and C++ at CppCon 2014</a></li> <li><a href="https://www.youtube.com/watch?v=efrgipu94Oc&t=1006s">Bryce Adelstein Lelbach on SoA and reflection at ACCU 2023</a></li> <li><a href="https://www.youtube.com/watch?v=GoIOnQEmXbs">Data-Oriented Design and Modern C++ at CppNow 2023</a></li> <li><a href="https://xania.org/200504/godbolt's-law">Godbolt's law</a></li> <li><a href="https://github.com/marzer/tomlplusplus">toml++ on GitHub</a></li> <li><a href="https://pvs-studio.com/en/blog/posts/cpp/1053/">PVS-Studio: 60 terrible tips for a C++ developer</a></li> </ul>

00:52:28

How CLion works under the hood

Dmitry Kozhevnikov joins Timur and guest co-host Matt Godbolt. Dmitry talks to us about how the CLion IDE works under the hood. <h3>News</h3> <ul> <li><a href="https://github.com/rui314/mold/releases/tag/v2.0.0">mold 2.0.0 released</a></li> <li><a href="https://jb.gg/clion-232">CLion 2023.2 released</a></li> <li><a href="https://www.think-cell.com/en/career/devblog/should-we-stop-writing-functions">Should we stop writing functions?</a></li> </ul> <h3>Links</h3> <ul> <li><a href="https://youtu.be/xBAduq0RGes?t=1839">C++ Lambda Idioms: technique to separate user-specified and deduced template parameters</a></li> <li><a href="https://kotlinfoundation.org/">The Kotlin Foundation</a></li> <li><a href="https://github.com/JetBrains/JetBrainsRuntime">JetBrains Runtime</a></li> <li><a href="https://www.jetbrains.com/help/clion/global-dataflow-analysis.html">CLion data flow analysis engine</a></li> <li><a href="https://pvs-studio.com/en/blog/posts/cpp/1053/">PVS-Studio: 60 terrible tips for a C++ developer</a></li> </ul>

00:58:31

Safety, Security and Modern C++, with Bjarne Stroustrup

Bjarne Stroustrup joins Phil and Timur. Bjarne talks to us about safety in C++ through profiles, as well as modules and concepts - and looks ahead to what else is coming next. <h3>News</h3> <ul> <li><a href="https://www.reddit.com/r/cpp/comments/14t857g/video_releases_on_the_cnow_youtube_channel/">C++ Now 2023 videos</a></li> <li><a href="https://www.youtube.com/playlist?list=PL9hrFapz4dsPIxK50qZ_BAlvh_Gt9B1fm">ACCU 2023 videos</a></li> <li><a href="https://surveys.jetbrains.com/s3/ti-developer-ecosystem-survey-2023">JetBrains Developer Ecosystem Survey 2023</a></li> <li><a href="https://bannalia.blogspot.com/2023/07/inside-boostconcurrentflatmap.html">Upcoming Boost 1.83 release</a></li> </ul> <h3>Links</h3> <ul> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2739r0.pdf">P2739R0 - 'A call to action: Think seriously about “safety"; then do something sensible about it'</a></li> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p2687r0.pdf">P2687R0 - 'Design Alternatives for Type-and-Resource Safe C++'</a></li> <li><a href="https://www.youtube.com/watch?v=yUIFdL3D0Vk">'Contemporary C++ in Action' (video) - Daniela Engert</a></li> </ul>

01:01:48

Sequence-Oriented Programming

Tristan Brindle joins Timur and Phil. Tristan talks to us about a safer alternative to iterators and his library, Flux, that implements it. <h3>News</h3> <ul> <li><a href="https://pvs-studio.com/en/blog/posts/cpp/1053/">60 terrible tips for a C++ developer</a></li> <li><a href="https://www.reddit.com/r/cpp/comments/14h4ono/202306_varna_iso_c_committee_trip_report_first/">Big, combined, committee trip report from Varna</a></li> <li><a href="https://blog.jetbrains.com/clion/2023/06/clion-2023-2-eap4-ai-assistant">CLion 2023.2 EAP4: AI Assistant</a></li> <li><a href="https://verdagon.dev/blog/vale-memory-safe-cpp">"Making C++ Memory-Safe Without Borrow Checking, Reference Counting, or Tracing Garbage Collection"</a></li> </ul> <h3>Links</h3> <ul> <li><a href="https://cppcast.com/odin-holmes-kvasir/">Episode 78 of CppCast, mentioning Cling</a></li> <li><a href="https://adspthepodcast.com/2023/06/30/Episode-136.html">Episode of ADSP recorded at C++ on Sea</a></li> <li><a href="https://cppcast.com/tom-oliver-tristan/">Episode 152 of CppCast, with Tristan and the C++ London Uni team</a></li> <li><a href="https://github.com/tcbrindle/flux">Flux on GitHub</a></li> </ul>

01:01:52

Contracts

Joshua Berne joins Phil and Timur. Joshua talks to us about the previous week's ISO C++ meeting in Varna, Bulgaria, then focuses on the current state of the contracts proposal that he has been central to, as well as a bit of its history. <h3>News</h3> <ul> <li>ISO C++ trip report's from Varna:<ul> <li><a href="https://herbsutter.com/2023/06/16/trip-report-summer-iso-c-standards-meeting-varna-bulgaria/">Herb Sutter's trip report</a></li> <li><a href="https://www.think-cell.com/en/career/devblog/trip-report-summer-iso-cpp-meeting-in-varna-bulgaria">Jonathan Müller's trip report</a></li> </ul> </li> <li><a href="https://www.reddit.com/r/cpp/comments/145fnjl/gcc_14_nrvo_enhancements/">GCC 14 NRVO enhancements (Reddit)</a><ul> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2025r2">P2025 proposes guaranteed NRVO</a></li> <li><a href="https://devblogs.microsoft.com/oldnewthing/20230612-00/?p=108329">How to get NRVO before C++26</a></li> </ul> </li> <li><a href="https://developer.apple.com/xcode/cpp/">XCode 15 beta</a></li> </ul> <h3>Links</h3> <ul> <li><a href="https://wg21.link/P2831">P2831 - "Functions having a narrow contract should not be noexcept"</a></li> <li><a href="https://wg21.link/P2521">P2521 - The current contracts MVP</a></li> <li><a href="http://wg21.link/p2695">P2695 - "A proposed plan for Contracts in C++"</a></li> <li><a href="https://wg21.link/P2811">P2811 - "Contract-Violation Handlers"</a></li> <li><a href="https://wg21.link/P2834">P2834 - "Semantic Stability Across Contract-Checking Build Modes"</a></li> <li><a href="https://isocpp.org/files/papers/P2877R0.pdf">P2877R0 - "Contract Build Modes, Semantics, and Implementation Strategies"</a></li> <li><a href="https://wg21.link/P2751">P2751 - "Evaluation of Checked Contract-Checking Annotations"</a></li> <li><a href="https://wg21.link/P2552">P2552 - "On the ignorability of standard attributes"</a></li> <li><a href="https://wg21.link/p2786">p2786 - "Trivial relocatability options"</a></li> <li><a href="https://wg21.link/P2839">P2839 - "Nontrivial Relocation via a New owning reference Type"</a></li> <li><a href="https://wg21.link/P0843R8">P0843R8 - "inplace_vector"</a></li> </ul>

01:11:04

Modules and build systems

Daniel Ruoso joins Phil and Timur. After covering a couple of blog posts and a new UI library, we welcome Daniel back to talk with us about modules, package and build systems and SG15, the tooling study group. We also revisit the Ecosystem International Standard. <h3>News</h3> <ul> <li><a href="https://medium.com/factset/modern-c-in-depth-is-string-view-worth-it-7ae7570b7830">Modern C++ In-Depth — Is string_view Worth It?</a></li> <li><a href="https://devblogs.microsoft.com/oldnewthing/20170927-00/?p=97095">How to check if a pointer is in a range of memory - Raymond Chen</a></li> <li><a href="https://nuicpp.org/">Nui - new C++ Webview UI library</a></li> <li><a href="https://www.reddit.com/r/cpp/comments/13yxm9u/nui_c_user_interface_library/">Nui on Reddit</a></li> <li><a href="https://timur.audio/survey">Timur's Undefined Behaviour survey</a></li> </ul> <h3>Links</h3> <ul> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2898r0.pdf">P2898R0 - "Importable Headers are Not Universally Implementable"</a></li> <li><a href="https://www.youtube.com/watch?v=vYl6mrEzn1E">"Clang Automated Refactoring for everyone with clangmetatool" - Daniel's C++ Now 2019 talk</a></li> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p1689r5.html">P1689R5 - "Format for describing dependencies of source files" (Kitware)</a></li> </ul>

01:07:14

C++ in Finance

Antony Peacock joins Timur and Phil. After rounding up the news, we chat with Antony about what it's like to work in finance as a C++ developer, the similarities and differences to games dev and how you can break in to a role in finance. We also discuss what it's like to work in tech as someone with dyslexia. <h3>News</h3> <ul> <li><a href="https://devblogs.microsoft.com/cppblog/visual-studio-17-6-for-cpp-devs/">Visual Studio 17.6 released</a></li> <li><a href="https://www.reddit.com/r/cpp/comments/137is3a/valgrind_321_released/">Valgrind 3.21 released</a></li> <li><a href="https://www.reddit.com/r/cpp/comments/13gdlbw/the_snitch_v11_testing_framework_is_out_now_with/">Snitch 1.1</a></li> <li><a href="https://meetingcpp.com/mcpp/submittalk/">Meeting C++ Call for Speakers (until June 18)</a></li> <li><a href="https://cppcon.org/cfs2023/">CppCon Call for Speakers (until June 25)</a></li> </ul> <h3>Links</h3> <ul> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p2547r1.html">P2547R1 - "Language Support for Customisable Functions"</a></li> <li><a href="https://www.mavensecurities.com/maven-on-c/">Maven on C++</a></li> <li><a href="https://www.mavensecurities.com/how-to-get-into-tech/">"How to get into the tech industry" (Maven's blog)</a></li> <li><a href="https://www.mavensecurities.com/revisiting-interview-questions-at-maven/">Interview question at Maven</a></li> <li><a href="https://profitview.net/events/algo-trading-cpp-20-ranges">"C++ 20 Techniques for Algorithmic Trading" (webinar)</a></li> <li><a href="https://profitview.net/events/cpp-concepts-low-latency-algo-trading">"C++ Concepts and Fireside Chat on Algorithmic Trading" (webinar)</a></li> <li><a href="https://profitview.net/events/cpp-python-algo-trading">"C++ and Python for Algorithmic Trading" (webinar)</a></li> <li><a href="https://github.com/profitviews/heisenberg">Example algo trading code from webinar series (1)</a></li> <li><a href="https://github.com/profitviews/fast-python-backtest">Example algo trading code from webinar series (2)</a></li> <li><a href="https://www.diversita.co.uk/_files/ugd/ddc8ad_164bb501ee6d42e1ba910a33f01e5d44.pdf">Antony's article on Neurodiversity and Dyslexia</a></li> <li><a href="https://www.diversita.co.uk">Diversita (UK)</a></li> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p0201r6.html">P0201R6 - "polymorphic_value: A Polymorphic Value Type for C++"</a></li> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p1950r2.html">P1950R2 - "indirect_value: A Free-Store-Allocated Value Type For C++"</a></li> <li><a href="https://github.com/jfalcou/eve">EVE - the Expressive Vector Engine</a></li> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p1385r7.pdf">P1385R7 - "Linear Algebra"</a></li> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1935r2.html">P1935R2 - "A C++ Approach to Physical Units"</a></li> <li><a href="https://github.com/mpusz/units">mp-units - Mateusz Pusz' implementation of physical units</a></li> <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p2547r0.pdf">P2547R0 - "Language support for customisable functions"</a></li> <li><a href="https://brevzin.github.io/c++/2020/12/01/tag-invoke/">"Why tag_invoke is not the solution I want" - Barry Revzin</a></li> </ul>

00:54:50