01. Study cpp reference for C++20

boost example
- Boost-Cpp-Application-Development-Cookbook-Second-Edition/SETUP/boost_test
- Boost-Cpp-Application-Development-Cookbook-Second-Edition/SETUP/test
cmake

cd Boost-Cpp-Application-Development-Cookbook-Second-Edition/SETUP
cmake -DCMAKE_BUILD_TYPE=debug .
make

reference site

Name		Name	Last commit message	Last commit date
Latest commit History 100 Commits
.github/workflows		.github/workflows
.vscode		.vscode
Boost-Cpp-Application-Development-Cookbook-Second-Edition @ d44d818		Boost-Cpp-Application-Development-Cookbook-Second-Edition @ d44d818
CPP20		CPP20
CPPTHREAD		CPPTHREAD
ChainOfResponsibility		ChainOfResponsibility
ProC++		ProC++
example		example
modern-cpp.xcodeproj		modern-cpp.xcodeproj
modoo_code		modoo_code
util/UtilProject		util/UtilProject
window		window
.gitignore		.gitignore
.gitmodules		.gitmodules
README.md		README.md
goorm.manifest		goorm.manifest