sol2/examples/source/docs/references_in_lambdas.cpp
2022-11-09 18:33:16 -05:00

29 lines
521 B
C++

#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>
int main(int, char*[]) {
struct test {
int blah = 0;
};
test t;
sol::state lua;
lua.set_function("f", [&t]() { return t; });
lua.set_function("g", [&t]() -> test& { return t; });
lua.script("t1 = f()");
lua.script("t2 = g()");
test& from_lua_t1 = lua["t1"];
test& from_lua_t2 = lua["t2"];
// not the same: 'f' lambda copied
SOL_ASSERT(&from_lua_t1 != &t);
// the same: 'g' lambda returned reference
SOL_ASSERT(&from_lua_t2 == &t);
return 0;
}