Data::Stream::Bulk::Util(3)

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@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.