Perl::Critic::Policy::InputOutput::RequireBracedFileHandleWithPrint(3pm)
                                           User Contributed Perl Documentation


NAME
       Perl::Critic::Policy::InputOutput::RequireBracedFileHandleWithPrint -
       Write "print {$FH} $foo, $bar;" instead of "print $FH $foo, $bar;".

AFFILIATION
       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION
       The "print" and "printf" functions have a unique syntax that supports
       an optional file handle argument.  Conway suggests wrapping this
       argument in braces to make it visually stand out from the other
       arguments.  When you put braces around any of the special package-level
       file handles like "STDOUT", "STDERR", and "DATA", you must add the '*'
       sigil or else it won't compile under use strict 'subs'.

         print $FH   "Mary had a little lamb\n";  #not ok
         print {$FH} "Mary had a little lamb\n";  #ok

         print   STDERR   $foo, $bar, $baz;  #not ok
         print  {STDERR}  $foo, $bar, $baz;  #won't compile under 'strict'
         print {*STDERR}  $foo, $bar, $baz;  #perfect!

CONFIGURATION
       This Policy is not configurable except for the standard options.

AUTHOR
       Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>

COPYRIGHT
       Copyright (c) 2005-2011 Imaginative Software Systems.  All rights
       reserved.

       This program is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself.  The full text of this license can
       be found in the LICENSE file included with this module.

perl v5.38.0                      2023-07-26
      Perl::Critic::Policy::InputOutput::RequireBracedFileHandleWithPrint(3pm)