optional-lite | optional lite - A C17-like optional | File Utils library

optional lite is a single-file header-only library. Put optional.hpp in the include folder directly into the project source tree or somewhere reachable from your project.
Create source file ./main.cpp, e.g. with the contents of the example code above.
Create ./conanfile.txt file with a reference to variant-lite in the requires section: [requires] optional-lite/3.2.0 # 3.3.0 when available [generators] cmake
Create ./CMakeLists.txt: cmake_minimum_required(VERSION 3.1) project(optional-example CXX) include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake) conan_basic_setup() add_executable(${PROJECT_NAME} main.cpp) target_link_libraries(${PROJECT_NAME} ${CONAN_LIBS})
Run the following commands: mkdir build && cd build conan install .. --settings arch=x86 --settings compiler=gcc cmake .. -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release cmake --build . --config Release