Author: larry Date: Thu May 18 16:23:46 2006 New Revision: 9299 Modified: doc/trunk/design/syn/S03.pod
Log: Clarification on xx operator semantics. Modified: doc/trunk/design/syn/S03.pod ============================================================================== --- doc/trunk/design/syn/S03.pod (original) +++ doc/trunk/design/syn/S03.pod Thu May 18 16:23:46 2006 @@ -12,9 +12,9 @@ Maintainer: Larry Wall <[EMAIL PROTECTED]> Date: 8 Mar 2004 - Last Modified: 15 May 2006 + Last Modified: 18 May 2006 Number: 3 - Version: 33 + Version: 34 =head1 Changes to existing operators @@ -59,7 +59,10 @@ =item * C<x> splits into two operators: C<x> (which concatenates repetitions of a string to produce a single string), and C<xx> (which creates a list of -repetitions of a list or scalar). +repetitions of a list or scalar). C<"foo" xx *> represents an arbitrary +number of copies, useful for initializing lists. The left side of +an C<xx> is evaluated only once. (To call a block repeatedly, use a C<map> +instead.) =item * Trinary C<? :> becomes C<?? !!>. It is a syntax error to use an operator in the middle that binds looser in precedence, such as C<=>.
