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MARCEL / Text-Pipe-0.10 / lib / Text / Pipe / List / Grep.pm 

            

              
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package Text::Pipe::List::Grep;
use warnings;
use strict;
our $VERSION = '0.10';
use base 'Text::Pipe::Base';
__PACKAGE__->mk_scalar_accessors(qw(code));
sub filter {
    my ($self, $input) = @_;
    return $input unless ref $input eq 'ARRAY';
    # kludge because of prototype requirements
    [ grep { $self->code->() } @$input ];
}
1;
__END__
=head1 NAME
Text::Pipe::List::Grep - Common text filter API
=head1 SYNOPSIS
    my $pipe = Text::Pipe->new('List::Grep', code => { $_ < 7 });
    my $result = $pipe->filter('foo');
=head1 DESCRIPTION
=head1 METHODS
=over 4
=item C<clear_code>
    $obj->clear_code;
Clears the coderef.
=item C<code>
    my $value = $obj->code;
    $obj->code($value);
A basic getter/setter method for the coderef. If called without an argument,
it returns the value. If called with a single argument, it sets the value.
=item C<code_clear>
Synonym for C<clear_code()>.
=item C<filter>
If the input is an array reference, it passes each element to the code
reference. The element will be in C<$_>. Returns all elements for which the
code reference returns a true value.
If the input is a single string, it just returns that string.
=back
Text::Pipe::List::Grep inherits from L<Text::Pipe::Base>.
The superclass L<Text::Pipe::Base> defines these methods and functions:
    new(), bit_or(), filter_single(), init()
The superclass L<Class::Accessor::Complex> defines these methods and
functions:
    mk_abstract_accessors(), mk_array_accessors(), mk_boolean_accessors(),
    mk_class_array_accessors(), mk_class_hash_accessors(),
    mk_class_scalar_accessors(), mk_concat_accessors(),
    mk_forward_accessors(), mk_hash_accessors(), mk_integer_accessors(),
    mk_new(), mk_object_accessors(), mk_scalar_accessors(),
    mk_set_accessors(), mk_singleton()
The superclass L<Class::Accessor> defines these methods and functions:
    _carp(), _croak(), _mk_accessors(), accessor_name_for(),
    best_practice_accessor_name_for(), best_practice_mutator_name_for(),
    follow_best_practice(), get(), make_accessor(), make_ro_accessor(),
    make_wo_accessor(), mk_accessors(), mk_ro_accessors(),
    mk_wo_accessors(), mutator_name_for(), set()
The superclass L<Class::Accessor::Installer> defines these methods and
functions:
    install_accessor()
The superclass L<Class::Accessor::Constructor> defines these methods and
functions:
    _make_constructor(), mk_constructor(), mk_constructor_with_dirty(),
    mk_singleton_constructor()
The superclass L<Data::Inherited> defines these methods and functions:
    every_hash(), every_list(), flush_every_cache_by_key()
The superclass L<Class::Accessor::Constructor::Base> defines these methods
and functions:
    STORE(), clear_dirty(), clear_hygienic(), clear_unhygienic(),
    contains_hygienic(), contains_unhygienic(), delete_hygienic(),
    delete_unhygienic(), dirty(), dirty_clear(), dirty_set(),
    elements_hygienic(), elements_unhygienic(), hygienic(),
    hygienic_clear(), hygienic_contains(), hygienic_delete(),
    hygienic_elements(), hygienic_insert(), hygienic_is_empty(),
    hygienic_size(), insert_hygienic(), insert_unhygienic(),
    is_empty_hygienic(), is_empty_unhygienic(), set_dirty(),
    size_hygienic(), size_unhygienic(), unhygienic(), unhygienic_clear(),
    unhygienic_contains(), unhygienic_delete(), unhygienic_elements(),
    unhygienic_insert(), unhygienic_is_empty(), unhygienic_size()
The superclass L<Tie::StdHash> defines these methods and functions:
    CLEAR(), DELETE(), EXISTS(), FETCH(), FIRSTKEY(), NEXTKEY(), SCALAR(),
    TIEHASH()
=head1 BUGS AND LIMITATIONS
No bugs have been reported.
Please report any bugs or feature requests through the web interface at
L<http://rt.cpan.org>.
=head1 INSTALLATION
See perlmodinstall for information and options on installing Perl modules.
=head1 AVAILABILITY
The latest version of this module is available from the Comprehensive Perl
Archive Network (CPAN). Visit L<http://www.perl.com/CPAN/> to find a CPAN
site near you. Or see L<http://www.perl.com/CPAN/authors/id/M/MA/MARCEL/>.
The development version lives at L<http://github.com/hanekomu/text-pipe/>.
Instead of sending patches, please fork this project using the standard git
and github infrastructure.
=head1 AUTHORS
Marcel GrE<uuml>nauer, C<< <marcel@cpan.org> >>
=head1 COPYRIGHT AND LICENSE
Copyright 2007-2009 by the authors.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut