Unix/Linux Go Back    

CentOS 7.0 - man page for perl::critic::policy::inputoutput::requirebracedfilehandlewithprint (centos section 3)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


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

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

       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 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!

       This Policy is not configurable except for the standard options.

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

       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 v5.16.3		   Perl::Critic::Policy::InputOutput::RequireBracedFileHandleWithPrint(3)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums

All times are GMT -4. The time now is 07:49 PM.