// $CXX -std=c++14 -O2 -fno-exceptions -fno-rtti -Wall -Werror -pedantic-errors hello_world.cpp // cl /std:c++14 /Ox /W3 hello_world.cpp (***) #include <boost/di.hpp> #include <cassert> #include <iostream> namespace di = boost::di; struct iworld { virtual ~iworld() noexcept = default; }; struct world : iworld { world() { std::cout << " world!" << std::endl; } }; struct hello { explicit hello(int i) { assert(42 == i); std::cout << "hello"; } }; // aggregate initialization `example{hello, world}` struct example { hello h; iworld& w; }; int main() { const auto injector = di::make_injector( di::bind<iworld>().to<world>() , di::bind<>().to(42) ); injector.create<example>(); }