sol2/examples/as_returns.cpp

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#define SOL_CHECK_ARGUMENTS 1
#include <sol.hpp>
#include "assert.hpp"
#include <string>
#include <set>
int main () {
sol::state lua;
lua.set_function("f", []() {
std::set<std::string> results{ "arf", "bark", "woof" };
return sol::as_returns(std::move(results));
});
lua.script("v1, v2, v3 = f()");
std::string v1 = lua["v1"];
std::string v2 = lua["v2"];
std::string v3 = lua["v3"];
c_assert(v1 == "arf");
c_assert(v2 == "bark");
c_assert(v3 == "woof");
return 0;
}