1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.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;
}
|
