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<html xmlns="http://www.w3.org/1999/xhtml">
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<title>libsigc++: sigc::visitor< T_functor > Struct Template Reference</title>
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libsigc++
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    2.10.0
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      • sigc
      • visitor
        •
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        Static Public Member Functions |
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        List of all members
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        sigc::visitor< T_functor > Struct Template Reference
        Functors
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        sigc::visitor<T_functor>::do_visit_each() performs a functor on each of the targets of a functor.
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         More...
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        #include <sigc++/visit_each.h>
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        Static Public Member Functions
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        template<class T_action >
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        static void do_visit_each (const T_action& _A_action, const T_functor& _A_functor)
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        Detailed Description
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        template<class T_functor>
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        struct sigc::visitor< T_functor >
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        sigc::visitor<T_functor>::do_visit_each() performs a functor on each of the targets of a functor.
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        All unknown types just call _A_action on them. Add specializations that specialize the T_functor argument for your own functor types, so that subobjects get visited. This is needed to enable auto-disconnection support for your functor types.
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        Example:
        namespace some_ns
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        {
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          struct some_functor
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          {
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            void operator()() {}
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            some_possibly_sigc_trackable_derived_type some_data_member;
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            some_other_functor_type some_other_functor;
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          };
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        }
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        namespace sigc
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        {
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          template <>
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          struct visitor<some_ns::some_functor>
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          {
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            template <class T_action>
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            static void do_visit_each(const T_action& _A_action,
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                                      const some_ns::some_functor& _A_target)
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            {
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              sigc::visit_each(_A_action, _A_target.some_data_member);
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              sigc::visit_each(_A_action, _A_target.some_other_functor);
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            }
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          };
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        }
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        Member Function Documentation
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        template <class T_functor >
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        template <class T_action >
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                  static void sigc::visitor< T_functor >::do_visit_each
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                  (
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                  const T_action & 
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                  _A_action,
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                  const T_functor & 
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                  _A_functor 
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                  )
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        inlinestatic
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         1.8.9.1
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