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#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>
#include <string>
#include <iostream>
int main () {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.script(R"(
obj = "please don't let me die";
)");
sol::object keep_alive = lua["obj"];
lua.script(R"(
obj = nil;
function say(msg)
print(msg)
end
)");
lua.collect_garbage();
lua["say"](lua["obj"]);
// still accessible here and still alive in Lua
// even though the name was cleared
std::string message = keep_alive.as<std::string>();
std::cout << message << std::endl;
// Can be pushed back into Lua as an argument
// or set to a new name,
// whatever you like!
lua["say"](keep_alive);
return 0;
}
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