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.