Perl::Critic::Policy::InputOutput::RequireCheckedOpen.3pm

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Version: 2010-09-08 (fedora - 01/12/10)

Section: 3 (Bibliothèques de fonctions)

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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 <thaljef@cpan.org>. Copyright (c) 2007-2009 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.