NAME

Perl::Critic::Policy::InputOutput::ProhibitJoinedReadline

DESCRIPTION

It's really easy to slurp a whole filehandle in at once with join q{}, <$fh>, but that's inefficient -- Perl goes to the trouble of splitting the file into lines only to have that work thrown away.

To save performance, either slurp the filehandle without splitting like so:

do { local $/ = undef; <$fh> }

or use File::Slurp, which is even faster.

CAVEATS

Due to a bug in the current version of PPI (v1.119_03) and earlier, the readline operator is often misinterpreted as less-than and greater-than operators after a comma. Therefore, this policy only works well on the empty filehandle, <>. When PPI is fixed, this should just start working.

CREDITS

Initial development of this policy was supported by a grant from the Perl Foundation.

AUTHOR

Chris Dolan <cdolan@cpan.org>

COPYRIGHT

Copyright (c) 2007 Chris Dolan. Many 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