Re: [function] How to extract a tuple<A0,A1> of arguments from a boost::function<>?

7 Aug 2003


      Peter Dimov  wrote in message news:001101c35d0a$e1cab440$1d00a8c0@pdimov2...
...
Fernando Cacciola wrote:
...
That is, instead of directly calling:
X x ;
Y y ;
x.f(1);
y.g('a',1.2);
I want to do something that would look like:
X x;
Y y;
ActionList actions;
actions.push_back( make_closure(&X::f, x,1) );
actions.push_back( make_closure(&Y::g, y,'a',1.2) );
std::for_each(actions.begin(),actions.end(),execute_action());
typedef std::list< boost::function > ActionList;
#define make_closure boost::bind
struct execute_action
{
    template<class F> void operator()(F & f) const
    {
        f();
    }
};
ActionList actions;
actions.push_back( make_closure(&X::f, &x, 1) );
actions.push_back( make_closure(&Y::g, &y, 'a', 1.2) );
std::for_each(actions.begin(),actions.end(),execute_action());
Beautyful!
Just copy-pasted and it worked just as you wrote it.
...
&x and &y since I'm assuming that you don't want x and y copied and stored
in the closure.
Yes...

Thanks

Fernando Cacciola