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This is Perl module Class::Monadic.

INSTALLATION

Class::Monadic installation is straightforward. If your CPAN shell is set up,
you should just be able to do

    $ cpan Class::Monadic

Download it, unpack it, then build it as per the usual:

    $ perl Makefile.PL
    $ make && make test

Then install it:

    $ make install

DOCUMENTATION

Class::Monadic documentation is available as in POD. So you can do:

    $ perldoc Class::Monadic

to read the documentation online with your favorite pager.

Goro Fuji (gfx)