On Wed, Sep 10, 2008 at 6:29 AM, Manuel Jung <gzahl@arcor.de> wrote:
Hey,
I want to define my own filter, which can take different signatures. It should take a Url (e.g. std::string, for me an unicode type) and use a difault timeout or it should take both.
There is an tutorial for multiple slots, when using a consumer, but i need a filter and i am wondering how i should define the signature of the filter then? (overlaoding of the operator() method needs to be done of course.
If your filter still has only a single output, it would be like this: class multi_input_filter : public signals::filter< multi_input_filter, // output signature void (const output_type &)> { public: void operator()(const std::string &url); void operator()(const std::string &url, double timeout); }; If you want to enumerate the inputs (which is needed for using some run-time aspects of the library, but otherwise not needed), then you can do that like this: class multi_input_filter : public signals::filter< multi_input_filter, // output signature void (const output_type &), // input signatures mpl::vector<void(const std::string &), void(const std::string &, double)> { //...same }; Does that help? Stjepan