NAME

       nx::next - Skip to the next most specific method implementation

SYNOPSIS

       next ?arguments?

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DESCRIPTION

       next ?arguments?
              This  command is invoked inside a method body to call the next most specific method implementation
              in the list of available methods. This list of  available  methods  is  specific  to  the  current
              method-call  context. This context is set by the usage context of nx::next (method combination vs.
              method-call interception; see below). The optional arguments are the argument values to be  passed
              into the next most specific method implementation. If omitted, the arguments of the current method
              call are automatically forwarded. To call the next most  specific  method  implementation  without
              arguments  (or to suppress argument forwarding), arguments must be set to an empty string. To pass
              an empty string as a (single) argument value, protect it as a  list.  The  result  of  a  call  to
              nx::next  is  the  result  of  the next most specific method implementation.  If there are no more
              further applicable methods, the result of nx::next  will  depend  on  its  usage  context:  method
              combination  or  method-call  interception.  If  nx::next  is  used  in  a  method body for method
              combination, the result will be an empty string. If nx::next is used  in  the  body  of  a  filter
              method for method-call interception, the result will be an error.

              When  executing  a  method  call,  the  NX dispatch mechanism computes a list of applicable method
              implementations for the method name requested from a given object receiving the call;  in  support
              of method combination and method-call interception.

              For  method combination, the computed list contains any object-local method implementation and any
              method implementations inherited by the object from the classes in its precedence  list.  Examples
              are overloading method implementations in the class hierarchy of the object, as well as from mixin
              classes of the object. For method-call interception, the computed  list  contains  the  applicable
              filter  methods,  again  ordered by their definition order according to the precedence list of the
              called object.

              To retrieve the next most specific method implementation to be invoked  by  nx::current  from  the
              internally computed list, if any, use nx::current.

COPYRIGHT

       Copyright (c) 2014-16 Stefan Sobernig <stefan.sobernig@wu.ac.at>, Gustaf Neumann <gustaf.neumann@wu.ac.at>