Perl::Critic::Policy::InputOutput::RequireCheckedOpen - Write
my $error = open $fh, $mode, $filename; instead of
open $fh, $mode, $filename;.
This Policy is part of the core Perl::Critic distribution.
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
If you create a module that exports
autodie you can tell this policy about it with the
[InputOutput::RequireCheckedSyscalls] autodie_modules = My::Thing
Andrew Moore <email@example.com>
This policy module is based heavily on policies written by Jeffrey Ryan Thalhammer <firstname.lastname@example.org>.
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.