Help !! perl open function Post: 302523346

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perl::critic::policy::inputoutput::requirecheckedopen

Perl::Critic::Policy::InputOutput::RequireCheckedOpen(3)User Contributed Perl DocumentatioPerl::Critic::Policy::InputOutput::RequireCheckedOpen(3)

NAME

       Perl::Critic::Policy::InputOutput::RequireCheckedOpen - Write "my $error = open $fh, $mode, $filename;" instead of "open $fh, $mode,
       $filename;".

AFFILIATION

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

DESCRIPTION

       The perl builtin I/O function "open" returns a false value on failure. That value should always be checked to ensure that the open was
       successful.

	   my $error = open( $filehandle, $mode, $filename );		       # ok
	   open( $filehandle, $mode, $filename ) or die "unable to open: $!";  # ok
	   open( $filehandle, $mode, $filename );			       # not ok

	   use autodie;
	   open $filehandle, $mode, $filename;				       # ok

       You can use autodie, Fatal, or Fatal::Exception to get around this.  Currently, autodie is not properly treated as a pragma; its lexical
       effects aren't taken into account.

CONFIGURATION

       This Policy is not configurable except for the standard options.

AUTHOR

       Andrew Moore <amoore@mooresystems.com>

ACKNOWLEDGMENTS

       This policy module is based heavily on policies written by Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>.

COPYRIGHT

       Copyright (c) 2007-2011 Andrew Moore.  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							    2014-06-09		  Perl::Critic::Policy::InputOutput::RequireCheckedOpen(3)

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Discussion started by: cyler