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 Stefan Sobernig <stefan.sobernig@wu.ac.at>, Gustaf Neumann <gustaf.neumann@wu.ac.at>