Changeset 23242

Timestamp:

02/02/06 07:26:32 (3 years ago)

Author:

larry

Message:

Added fake =~ operator to catch the otherwise uncatchable "$a =~ /foo/" mistake.

Files:

• doc/trunk/design/syn/S03.pod (modified) (3 diffs)

doc/trunk/design/syn/S03.pod

@@ -13 +13 @@
   Maintainer: Larry Wall <larry@wall.org>
   Date: 8 Mar 2004
-  Last Modified: 25 Jan 2006
+  Last Modified: 1 Feb 2006
   Number: 3
-  Version: 11
+  Version: 12
 
 =head1 Operator renaming
@@ -104 +104 @@
 =item * C<^^> is the high-precedence version of C<xor>.
 
-=item * C<=~> becomes the "smart match" operator C<~~>, with a whole new
-set of semantics.  Anywhere you used C<=~> before you now use C<~~>, but 
-C<~~> is much more general now.  See L<Synopsis 4> for details.
+=item * C<=~> becomes the "smart match" operator C<~~>, with a whole new set
+of semantics.  Anywhere you used C<=~> before you now use C<~~>, but C<~~> is
+much more general now.  See L<Synopsis 4> for details.  (To catch "brainos",
+the Perl 6 parser defines an C<< infix:<=~> >> macro which always fails at
+compile time with a message directing the user either to use C<~~> instead,
+or to put a space between if they really wanted to assign a stringified value.)
 
 =item * Unary C<.> calls its single argument (which must be a method, or an
@@ -137 +140 @@
 variants C<.*>, C<.?>, and C<.+> to control how multiple parent methods
 of the same name are handled.  The C<.=> operator does inplace modification
-of the object on the left.
+of the object on the left.  The C<.^> operator calls a class metamethod.
 
 =item * Unary C<=> reads lines from a filehandle or filename, or in general