as_args¶
turn an iterable argument into multiple arguments
template <typename T>
struct as_args_t { ... };
template <typename T>
as_args_t<T> as_args( T&& );
sol::as_args
is a function that that takes an iterable and turns it into multiple arguments to a function call. It forwards its arguments, and is meant to be used as shown below:
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 | #define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>
#include <iostream>
#include <vector>
#include <set>
int main(int , const char*[]) {
std::cout << "=== args_from_container ===" << std::endl;
sol::state lua;
lua.open_libraries();
lua.script("function f (a, b, c, d) print(a, b, c, d) end");
sol::function f = lua["f"];
std::vector<int> v2{ 3, 4 };
f(1, 2, sol::as_args(v2));
std::set<int> v4{ 3, 1, 2, 4 };
f(sol::as_args(v4));
int v3[] = { 2, 3, 4 };
f(1, sol::as_args(v3));
std::cout << std::endl;
return 0;
}
|
It is basically implemented as a one-way customization point. For more information about customization points, see the tutorial on how to customize sol to work with your types.