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pure_out_value
----------------
Motivation
~~~~~~~~~~
This works exactly like ``out_value``, except that it will pass a
default constructed object instead of converting an argument from
Lua. This means that the parameter will be removed from the lua
signature.
Defined in
~~~~~~~~~~
.. parsed-literal::
#include <luabind/out_value_policy.hpp>
Synopsis
~~~~~~~~
.. parsed-literal::
pure_out_value(index, policies = none)
Parameters
~~~~~~~~~~
=============== =============================================================
Parameter Purpose
=============== =============================================================
``index`` The index of the parameter to be used as an out parameter.
``policies`` The policies used internally to convert the out parameter
to Lua. ``_1`` is used as the internal index.
=============== =============================================================
Example
~~~~~~~
Note that no values are passed to the calls to ``f1`` and ``f2``.
.. parsed-literal::
void f1(float& val) { val = 10.f; }
void f2(float\* val) { \*val = 10.f; }
module(L)
[
def("f", &f, **pure_out_value(_1)**)
];
Lua 5.0 Copyright (C) 1994-2003 Tecgraf, PUC-Rio
> print(f1())
10
> print(f2())
10
|
