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Perl-Critic-1.133_02
River stage three • 133 direct dependents • 408 total dependents
130 ++
/ Perl::Critic::Policy::InputOutput::RequireCheckedClose

NAME

Perl::Critic::Policy::InputOutput::RequireCheckedClose - Write my $error = close $fh; instead of close $fh;.

AFFILIATION

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

DESCRIPTION

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

    my $error = close $filehandle;                   # ok
    close $filehandle or die "unable to close: $!";  # ok
    close $filehandle;                               # not ok

    use autodie qw< :io >;
    close $filehandle;                               # 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

If you create a module that exports autodie you can tell this policy about it with the autodie_modules setting:

    [InputOutput::RequireCheckedSyscalls]
    autodie_modules = My::Thing

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.