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boost::signals2::slot_base — Base class for slots.
// In header: <boost/signals2/slot_base.hpp> class slot_base { public: // types typedef > ; // tracking () ; () ; };
slot_base
tracking() ;
Returns: |
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() ;
Returns: |
A container holding shared_ptr s to each of the slot's tracked objects. As long
as the returned container is kept in scope, none of the slot's tracked objects can expire. |
Throws: |
expired_slot if any of the slot's tracked objects have expired. |