http://tmplbook.com/ http://tmplbook.com/ and study the source code of some good-quality open source project, for example https://github.com/fmtlib/fmt/ https:/

http://tmplbook.com/ http://tmplbook.com/ and study the source code of some good-quality open source project, for example https://github.com/fmtlib/fmt/ https://github.com/fmtlib/fmt/ and this could be also handy: https://en.cppreference.com/w/cpp/meta https://en.cppreference.com/w/cpp/meta