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#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>
#include "assert.hpp"
#include <unordered_set>
#include <iostream>
int main() {
struct hasher {
typedef std::pair<std::string, std::string> argument_type;
typedef std::size_t result_type;
result_type operator()(const argument_type& p) const {
return std::hash<std::string>()(p.first);
}
};
using my_set = std::unordered_set<std::pair<std::string, std::string>, hasher>;
std::cout << "=== containers with std::pair<> ===" << std::endl;
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.set_function("f", []() {
return my_set{ { "key1", "value1" },{ "key2", "value2" },{ "key3", "value3" } };
});
lua.safe_script("v = f()");
lua.safe_script("print('v:', v)");
lua.safe_script("print('#v:', #v)");
// note that using my_obj:pairs() is a
// way around pairs(my_obj) not working in Lua 5.1/LuaJIT: try it!
lua.safe_script("for k,v1,v2 in v:pairs() do print(k, v1, v2) end");
std::cout << std::endl;
return 0;
}
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