Template Metaprogramming: Type Traits Part 1 CppCon 2020 1 Jody Hagins
 jhagins@maystreet.com 
 coachhagins@gmail.comTemplate Metaprogramming: Type Traits CppCon 2020 2 IntroductionIntended Audience necessarily beginner to C++, but beginner to traditional template metaprogramming techniques • Type traits part of standard library for ~10 years 3Intended Audience • Beginner/Intermediate • Gentle necessarily beginner to C++, but beginner to traditional template metaprogramming techniques • Type traits part of standard library for ~10 years • Fundamentals have been in use for ~20 years 3Intended

CppCon 2021 CppCon 2021 What’s New In ‘ Visual Studio 64-bit IDE, C++20, WSL2, and More Marian Luparu (he/him) @mluparu Sy Brand (they/them) @TartanLlama C++ Product Team, Microsoft @VisualC https://aka Code Safety 3. Cross-platform development 4. Developer and Team Productivity Static Analysis ✴ New and improved checkers in MSVC Code Analysis • Returning a local variable with std::move • Path-sensitive Safety 3. Cross-platform development 4. Developer and Team Productivity New in Visual Studio 2022 • 64bit IDE • New themes available https://aka.ms/vsthemes • Or bring your own VSCode theme

VS Code @ CppCon 2024 What’s new for Visual Studio Code: Performance, GitHub Copilot, and CMake Enhancements (Provided by Conference)Meet the Speakers Sinem Akinci PM for C++ Copilot and CMake in in VS Code Alexandra Kemper PM for the C++ Extension for VS CodeAgenda: What's new in VS Code Faster Performance Smarter GitHub Copilot suggestions Easier to use Features for CMake & C/C++ Extensible Copilot solutions Wait I want to learn about Visual Studio! Check out the talk tomorrow @ 13:30 “What’s New in Visual Studio for C++ Developers” – Mryam Girmay & Michael PriceVS Code has a rich extension ecosystem

Thread-specific storage Visit https://aka.ms/c11-threads for more details AnnouncingStatic Analysis • 10+ new checks: • High-confidence lifetime checks. • Date calculations not considering leap years. • Evaluation HorvathIn Visual Studio 2022 version 17.7, Address Sanitizer continue_on_error Mode Now Available • A new “checked build” for C and C++ • Diagnoses and reports hidden memory safety errors, with zero false entire test suite collecting all memory safety issues. • Enable developers to implement a simple new gate for shipping C++ on Windows. Announcing Visit https://aka.ms/asan-coe for more detailsVisual

SSH/container/WSL remote experiences and much, much more… https://aka.ms/cpp/code Thu 09/19 – 16:15pm What’s New for Visual Studio Code Alexandra Kemper & Sinem Akinci10 Years of Microsoft @ CppCon Many thanks to… modules • Fewer missed bugs (more checks for inlined calls) with Address Sanitizer Performance • New SLP vectorizer to vectorize non-loop code o https://aka.ms/cpp/slp-vec-example • Better utilization

Existing integer literal suffixes: U, L, UL, LL, and ULL  New:  uz or UZ: creates a std::size_t integer literal  z or Z: creates a signed integer type corresponding to std::size_t22 Literal Suffix for size_t Erasure  Removed Features  Garbage Collection Support26 #elifdef, #elifndef, and #warning  New preprocessor directives  Existing:  #ifdef id shorthand for #if defined(id)  #ifndef id shorthand Heterogeneous Erasure  Removed Features  Garbage Collection Support44  Defined in  New adaptors on top of basic sequence containers  Associative container interface (similar to std::map)

TiDB 2.1: What's New and What's Next shenli@pingcap.com Agenda ● What’s new in TiDB 2.1 ○ PD/TiKV ○ TiDB ○ Tools ● What’s next? TiDB 2.1 PD/TiKV (1/2) ● Version Control ● PreVote ○ PD ○ TiKV ● Hint` in the `UPDATE` and `DELETE` statements ○ Parallel `Hash Aggregate`, `Project` operators ○ New Aggregation Framework ○ Update statistic based on query feedback ○ Explain Analyze Statement ● DDL distribution of table Regions in the TiKV cluster ○ General log ○ Log level Tools ● Lightning ● New binlog Benchmark 2.0 VS 1.0 on TPC-H Scale 50 2.1 VS 2.0 on TPC-H Scale 50 2.1 VS 2.0 on

name]["type"] = f.type; } return json; } Why should I care about reflection?• Serialization • Binary, JSON, etc. 7 json value_to_json(any any_value) { // Handle builtins if (any_value.type() == the_type()) the_type()) return json{ any_value.value() }; if (any_value.type() == the_type()) return json{ any_value.value() }; if (any_value.type() == the_type()) return name]["value"] = value_to_json(f.value()); json[f.name]["type"] = f.type; } return json; } Why should I care about reflection?• Extension to the type system • WPF, Automatic Bindings • Language bindings:

Clang-tidy https://aka.ms/cpp/clangtidy • Visual Studio Code Linters https://aka.ms/cpp/linter ✴ New C++ Core Checkers in MSVC Code Analysis • Missing default label in switch statements • Unannotated of Sanitizers? Victor Ciura – Fuzzing/Testing venue Fri 9/18 12:00 – 13:00 Introducing Microsoft’s New Open Source Fuzzing Platform Justin Campbell, Michael Walker – Fuzzing/Testing venue Visit https://aka • Popular build targets supported by default, and you can add your own custom targets Powerful *new* features for personal and professional projects Learn more at https://aka.ms/vcpkgAnnouncing today

in the detailsa = ⌊m × ′ 10F 2E−1 ⌋ a = ⌊ 2K m × N(E) ′ ⌋ = twice the size of floating-point type K F = ⌊E × log(2)⌋ = ⌊E × 0.301...⌋ F = ⌊ 232 1, 292, 913, 987 × E ⌋ ∀E ∈ [−112, 815 , 112, 815] look-up table N(E) ≅ 2 × K 10F 2E−1 a = ⌊ 2K m × N(E) ′ ⌋ = twice the size of floating-point type K F = ⌊E × log(2)⌋ = ⌊E × 0.301...⌋ F = ⌊ 232 1, 292, 913, 987 × E ⌋ ∀E ∈ [−112, 815 , 112, 815] look-up table N(E) ≅ 2 × K 10F 2E−1 a = ⌊ 2K m × N(E) ′ ⌋ = twice the size of floating-point type K F = ⌊E × log(2)⌋ = ⌊E × 0.301...⌋ F = ⌊ 232 1, 292, 913, 987 × E ⌋ ∀E ∈ [−112, 815 , 112, 815]