perlio::mmap(3pm) [osx man page]

PerlIO::mmap(3pm)					 Perl Programmers Reference Guide					 PerlIO::mmap(3pm)

NAME

       PerlIO::mmap - Memory mapped IO

SYNOPSIS

	open my $fh, '<:mmap', $filename;

DESCRIPTION

       This layer does "read" and "write" operations by mmap()ing the file if possible, but falls back to the default behavior if not.

IMPLEMENTATION NOTE

       "PerlIO::mmap" only exists to use XSLoader to load C code that provides support for using memory mapped IO. One does not need to explicitly
       "use PerlIO::mmap;".

perl v5.16.2							    2012-10-25							 PerlIO::mmap(3pm)

PerlIO::via::Bzip2(3)					User Contributed Perl Documentation				     PerlIO::via::Bzip2(3)

NAME

       PerlIO::via::Bzip2 - PerlIO layer for Bzip2 (de)compression

SYNOPSIS

	   use PerlIO::via::Bzip2;
	   # or
	   use PerlIO::via::Bzip2 level => 9; # Maximum compression

	   # Read a bzip2 compressed file from disk.
	   open(my $fh, "<:via(Bzip2)", "compressed_file");
	   my $uncompressed_data = <$fh>;

	   # Compress data on-the-fly to a bzip2 compressed file on disk.
	   open(my $fh, ">:via(Bzip2)", "compressed_file");
	   print {$fh} $uncompressed_data;

	   # Set compression level
	   PerlIO::via::Bzip2->level(5);
	   open(my $fh, ">:via(Bzip2)", "compressed_file");
	   print {$fh} $uncompressed_data;

DESCRIPTION

       This module implements a PerlIO layer which will let you handle bzip2 compressed files transparently.

   Class Methods
       level([$level])
	   level sets or returns the compression level of the bzip2 library.  It ranges from 1 (least compression, most efficient memory use) to 9
	   (best compression, most memory usage).

	   This parameter can also be set during using library import, using "use PerlIO::via::Bzip2 level => $level".

BUGS

       Using binmode() on an opened file for compression will pop (remove) the layer.

PREREQUISITES

       This module requires Compress::Bzip2 version 1.03.

SEE ALSO

       PerlIO::via, Compress::Bzip2

AUTHOR

       Arjen Laarhoven, <arjen@cpan.org>

COPYRIGHT AND LICENSE

       Copyright (C) 2005 by Arjen Laarhoven

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2005-03-04						     PerlIO::via::Bzip2(3)