phpman > perldoc > Data::Stream::Bulk::Util(3pm)

NAME
    Data::Stream::Bulk::Util - Utility functions for Data::Stream::Bulk

VERSION
    version 0.11

SYNOPSIS
            use Data::Stream::Bulk::Util qw(array);

            use namespace::clean;

            # Wrap a list in L<Data::Stream::Bulk::Array>
            return bulk(qw(foo bar gorch baz));

            # return an empty resultset
            return nil();

DESCRIPTION
    This module exports convenience functions for use with Data::Stream::Bulk.

EXPORTS
    Sub::Exporter is used to create the "import" routine, and all of its aliasing/currying goodness
    is of course supported.

    nil Creates a new Data::Stream::Bulk::Nil object.

        Takes no arguments.

    bulk @items
        Creates a new Data::Stream::Bulk::Array wrapping @items.

    cat @streams
        Concatenate several streams together.

        Returns "nil" if no arguments are provided.

    filter { ... } $stream
        Calls "filter" on $stream with the provided filter.

    unique $stream
        Filter the stream to remove duplicates.

        Note that memory use may potentially scale to O(k) where k is the number of distinct items,
        because this is implemented in terms of a seen hash.

        In the future this will be optimized to be iterative for sorted streams.

        References are keyed by their refaddr (see "id" in Hash::Util::FieldHash).

AUTHOR
    Yuval Kogman <nothingmuch AT woobling.org>

COPYRIGHT AND LICENSE
    This software is copyright (c) 2012 by Yuval Kogman.

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