mirror of
https://github.com/ThePhD/sol2.git
synced 2024-03-22 13:10:44 +08:00
52 lines
1.2 KiB
ReStructuredText
52 lines
1.2 KiB
ReStructuredText
as_args
|
|
=======
|
|
*turn an iterable argument into multiple arguments*
|
|
|
|
|
|
.. code-block:: cpp
|
|
|
|
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:
|
|
|
|
.. code-block:: cpp
|
|
:linenos:
|
|
:caption: as_args.c++
|
|
|
|
#define SOL_CHECK_ARGUMENTS
|
|
#include <sol.hpp>
|
|
|
|
#include <vector>
|
|
#include <set>
|
|
|
|
int main(int argc, const char* argv[]) {
|
|
|
|
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));
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
It is basically implemented as a `one-way customization point`_. For more information about customization points, see the :doc:`tutorial on how to customize Sol to work with your types<../tutorial/customization>`.
|
|
|
|
.. _one-way customization point: https://github.com/ThePhD/sol2/blob/develop/sol/as_args.hpp
|