tested • Released VS 2019 16.5, 16.6, 16.7, 16.8 Preview 3 • GitHub migration ongoing • Build system (native desktop), test suite, issue database • Goal: Complete C++20 in 2020 • No promises, but via GitHub's GraphQL API29 Code: github.com/microsoft/STL • Product: stl/inc, stl/src • Build system: CMake/Ninja • vcpkg submodule acquires Boost.Math for Special Math • tests/std, tests/libcxx, entry immediately • Advice for Reviewing Pull Requests • MSVC STL Contributors Meeting Notes • Macro _MSVC_STL_UPDATE • Updated every month by new contributors • Custom Autolinks • DevCom-724444,

添加要链接的库 • target_add_definitions(myapp PUBLIC MY_MACRO=1) # 添加一个宏定义 • target_add_definitions(myapp PUBLIC -DMY_MACRO=1) # 与 MY_MACRO=1 等价 • target_compile_options(myapp PUBLIC -fopenmp) 添加头文件搜索目录 • link_directories(/opt/cuda) # 添加库文件的搜索路径 • add_definitions(MY_MACRO=1) # 添加一个宏定义 • add_compile_options(-fopenmp) # 添加编译器命令行选项 第三方库 - 作为纯头文件引入

CMAKE_MODULE_PATH 这个列表 中的所有路径下查找 XXX.cmake 这个文件。 • 这样你可以在 XXX.cmake 里写一些你常用的函数，宏，变量等。 macro 和 function 的区别 • macro 相当于直接把代码粘贴过去，直接访问调用者的作用域。这里写的相对路径 include 和 src ，是基于调用者所在路径。 • function 则是会创建一个闭包， https://cmake.org/cmake/help/latest/command/function.html https://cmake.org/cmake/help/latest/command/macro.html include 和 add_subdirectory 的区别 • include 相当于直接把代码粘贴过去，直接访问调用者的作用域。这里创建的变量和外面共 享，直接 set(key

not the same as “width”. Explicitly state/document/reference function conventions. • Defining a macro for calling conventions is a great start. For example, MYLIB_CCONV. • Reference: llvm - CallingConv not the same as “width”. Explicitly state/document/reference function conventions. • Defining a macro for calling conventions is a great start. For example, MYLIB_CCONV. • Reference: llvm - CallingConv

Mock rule based on path matching regex extern crate wapc_guest as guest; #[macro_use] extern crate wasm_mock_util; #[macro_use] extern crate serde_json; use guest::prelude::*; use wasm_mock_util::*;

除了父子模块之外还有哪些是带独立作用域的 • include 的 XXX.cmake 没有独立作用域 • add_subdirectory 的 CMakeLists.txt 有独立作用域 • macro 没有独立作用域 • function 有独立作用域 • （因此 PARENT_SCORE 也可以用于 function 的返回值） • https://cmake.org/cmake/help/v3

Dates  Time Zones20 Clocks  Several clocks available in :  std::system_clock: wall clock time from system-wide real-time clock  std::steady_clock: guarantees it never goes backwards current time as a time_point. system_clock::time_point tpoint { system_clock::now() }; // Or: auto tpoint { system_clock::now() }; // Convert to a time_t. time_t tt { system_clock::to_time_t(tpoint) }; // aliases: template using sys_time = std::chrono::time_pointsystem_clock, Duration>; // Representation of number of seconds since epoch. using sys_seconds = sys_t

leap_seconds (https://youtu.be/WX3OmVu4lAs) • time_zone and time_zone_link (https://youtu.be/MODhhr7m-5s) • system_clock::now(), file_clock, leap second awareness (https://youtu.be/c7DT28TV0AY)9 Part II: Calendrical requirements.20 C++20’s chrono adds several new clocks ([time.clock]) Existing clocks (pre-C++20) • system_clock • (file_clock) New clocks (in C++20) • utc_clock • tai_clock • gps_clock • (file_clock)21 (file_clock)21 C++20’s chrono adds several new clocks ([time.clock]) Existing clocks (pre-C++20) • system_clock • (file_clock) New clocks (in C++20) • utc_clock • tai_clock • gps_clock • (file_clock)22 Why

said it?Frederick Brooks Jr. • Joined IBM in 1956 • Manager for the development of the IBM System/360 family of computers and the OS/360 software package • In 1975, published The Mythical Man-Month: designersRequirements refinement and rapid prototyping • The hardest single part of building a software system is deciding precisely what to build • The most important function that software builders do for present-day software acquisition procedures rests upon the assumption that one can specify a satisfactory system in advance, get bids for its construction, have it built, and install it • This assumption is fundamentally

and when work should happen … including some standard ones: an event loop, portable access to the system execution context, nursery for spawned work4 P2300: STD::EXECUTION Proposes: • A set of concepts ☹ the greatest keyboard ever made….82 The mission: Write a program that monitors the entire system for keyboard events and plays Model M clicky sounds.83 MODEL M SIMULATOR: STRATEGY 1. Model Profit!84 Step 1: Model key click as a sender85 MODEL KEYCLICK AS SENDER: STRATEGY 1. Assume system API for registering keyboard callback 2. Write a keyboard sender and op state such that: •