Author: larry Date: Thu Aug 21 13:38:48 2008 New Revision: 14577 Modified: doc/trunk/design/syn/S12.pod
Log: Clarification that categories change the choice of dispatcher on method names Modified: doc/trunk/design/syn/S12.pod ============================================================================== --- doc/trunk/design/syn/S12.pod (original) +++ doc/trunk/design/syn/S12.pod Thu Aug 21 13:38:48 2008 @@ -1062,6 +1062,32 @@ which will import the multi sub lexically, after which you can call it using normal subroutine call syntax. +Note that explicit use of a syntactic category as a method name +overrides the choice of dispatcher, so + + $x.infix:<*>($y) + +and + + infix:<*>($x,$y) + +are exactly equivalent. That is, both calls use the subroutine/multi +dispatcher, not the method/single dispatcher. Likewise + + foo($bar) + +can be written + + $bar.prefix:<foo>() + +with the same meaning. To get single dispatch of that method +name to a foreign function, you must say: + + $bar.'prefix:<foo>'() + +Most foreign languages are not going to understand such a method name, +however. + =head1 Multi dispatch Multi submethods work just like multi methods except they are constrained
