Author: lwall
Date: 2009-12-11 21:31:19 +0100 (Fri, 11 Dec 2009)
New Revision: 29326
Modified:
docs/Perl6/Spec/S32-setting-library/IO.pod
Log:
[S32/IO] reduce bare say/print to warning
Modified: docs/Perl6/Spec/S32-setting-library/IO.pod
===================================================================
--- docs/Perl6/Spec/S32-setting-library/IO.pod 2009-12-11 20:23:43 UTC (rev
29325)
+++ docs/Perl6/Spec/S32-setting-library/IO.pod 2009-12-11 20:31:19 UTC (rev
29326)
@@ -22,8 +22,8 @@
Created: 19 Feb 2009 extracted from S29-functions.pod; added stuff from
S16-IO later
- Last Modified: 19 Nov 2009
- Version: 9
+ Last Modified: 11 Dec 2009
+ Version: 10
The document is a draft.
@@ -429,10 +429,15 @@
result to the output.
Returns C<Bool::True> if successful, C<Failure> otherwise.
-It is a compiler error to use a bare C<print> without arguments.
+The compiler will warn you if use a bare C<print> without arguments.
(However, it's fine if you have an explicit argument list that evaluates to
the empty list at runtime.)
+ print; # warns
+ if $_ { print } # warns
+ if $_ { print() } # ok, but does nothing
+ if $_ { print () } # ok, but does nothing
+
=item method say (*...@list --> Bool)
=item multi say (*...@list --> Bool)
@@ -443,7 +448,7 @@
Was: print "Hello, world!\n";
Now: say "Hello, world!";
-As with C<print>, it is a compiler error to use a bare C<say> without
+As with C<print>, the compiler will warn you if you use a bare C<say> without
arguments.
=item multi note (*...@list --> Bool)
