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Postings from August 2006
Author: larry
Date: Thu Aug 17 16:08:34 2006
New Revision: 11113
Modified:
doc/trunk/design/syn/S04.pod
Log:
Some leave simplifications.
Modified: doc/trunk/design/syn/S04.pod
==============================================================================
--- doc/trunk/design/syn/S04.pod (original)
+++ doc/trunk/design/syn/S04.pod Thu Aug 17 16:08:34 2006
@@ -12,9 +12,9 @@
Maintainer: Larry Wall <larry@wall.org>
Date: 19 Aug 2004
- Last Modified: 15 Aug 2006
+ Last Modified: 17 Aug 2006
Number: 4
- Version: 35
+ Version: 36
This document summarizes Apocalypse 4, which covers the block and
statement syntax of Perl.
@@ -504,13 +504,14 @@
To return a value from a pointy block or bare closure, you either
just let the block return the value of its final expression, or you can
use C<leave>. A C<leave> by default exits from the innermost block.
-But you may change the behavior of C<leave> with selector adverbs:
+But you may change the behavior of C<leave> with a selector as the
+first argument:
- leave :from(Loop) :label<LINE> <== 1,2,3; # XXX "with"?
+ leave Loop where { .label ~~ 'LINE' }, 1,2,3;
The innermost block matching the selection criteria will be exited.
-The return value, if any, must be passed as a list. To return pairs
-as part of the value, you can use a feed operator:
+The return value, if any, must be passed as the second and subsequent arguments.
+To return pairs as part of the value, you can use a feed operator:
leave <== :foo:bar:baz(1) if $leaving;