"IO::Callback" provides an easy way to produce a phoney read-only filehandle
that calls back to your own code when it needs data to satisfy a read. This
is useful if you want to use a library module that expects to read data from
a filehandle, but you want the data to come from some other source and you
don't want to read it all into memory and use IO::String.

    use IO::Callback;

    my $fh = IO::Callback->new('<', sub { ... ; return $data });
    my $object = Some::Class->new_from_file($fh);

Similarly, IO::Callback allows you to wrap up a coderef as a write-only
filehandle, which you can pass to a library module that expects to write its
output to a filehandle.

    my $fh = IO::Callback->new('>', sub { my $data = shift ; ... });


To install this module, run the following commands:

	perl Build.PL
	./Build test
	./Build install


After installing, you can find documentation for this module with the
perldoc command.

    perldoc IO::Callback

You can also look for information at:

    RT, CPAN's request tracker

    AnnoCPAN, Annotated CPAN documentation

    CPAN Ratings

    Search CPAN


Copyright 1998-2005 Gisle Aas.

Copyright 2009-2010 Dave Taylor.

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

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