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Postings from October 2008
Author: larry
Date: Sat Oct 11 11:39:24 2008
New Revision: 14593
Modified:
doc/trunk/design/syn/S06.pod
Log:
clarify use of [...] and {...} in a signature
Modified: doc/trunk/design/syn/S06.pod
==============================================================================
--- doc/trunk/design/syn/S06.pod (original)
+++ doc/trunk/design/syn/S06.pod Sat Oct 11 11:39:24 2008
@@ -13,9 +13,9 @@
Maintainer: Larry Wall <larry@wall.org>
Date: 21 Mar 2003
- Last Modified: 17 Mar 2008
+ Last Modified: 11 Oct 2008
Number: 6
- Version: 94
+ Version: 95
This document summarizes Apocalypse 6, which covers subroutines and the
@@ -1373,6 +1373,19 @@
...
}
+Use of the curly form is not allowed where it might be confused with the
+following block's opening curly:
+
+ -> {:$name, :$addr, *%guest_data}, $room_num { # WRONG
+
+However, as described in the next section, you can always use a
+sub-signature instead:
+
+ -> (:$name, :$addr, *%guest_data), $room_num { # WRONG
+
+In fact, the [...] and {...} forms are really just extra documentation
+about what you expect.
+
=head2 Unpacking tree node parameters
You can unpack tree nodes in various dwimmy ways by enclosing the bindings
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