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#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>
#include <vector>
#include <iostream>
int main(int, char**) {
std::cout << "=== containers ===" << std::endl;
sol::state lua;
lua.open_libraries();
lua.script(R"(
function f (x)
print("container has:")
for k=1,#x do
v = x[k]
print("\t", k, v)
end
print()
end
)");
// Have the function we
// just defined in Lua
sol::function f = lua["f"];
// Set a global variable called
// "arr" to be a vector of 5 lements
lua["arr"] = std::vector<int> { 2, 4, 6, 8, 10 };
// Call it, see 5 elements
// printed out
f(lua["arr"]);
// Mess with it in C++
// Containers are stored as userdata, unless you
// use `sol::as_table()` and `sol::as_table_t`.
std::vector<int>& reference_to_arr = lua["arr"];
reference_to_arr.push_back(12);
// Call it, see *6* elements
// printed out
f(lua["arr"]);
lua.script(R"(
arr:add(28)
)");
// Call it, see *7* elements
// printed out
f(lua["arr"]);
lua.script(R"(
arr:clear()
)");
// Now it's empty
f(lua["arr"]);
std::cout << std::endl;
return 0;
}
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