Perl::Critic::Policy::InputOutput::RequireBracedFileHandleWithPrint(3)
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 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.Perl::Critic::Policy::InputOutput::RequireBracedFileHandleWithPrint(3)
perl-critic 1.134.0 - Generated Mon Jun 3 13:03:12 CDT 2019