/ 
Data-Unixish-1.56
River stage two • 9 direct dependents • 49 total dependents
/ Data::Unixish::grep

NAME

Data::Unixish::grep - Perl grep

VERSION

This document describes version 1.56 of Data::Unixish::grep (from Perl distribution Data-Unixish), released on 2017-07-10.

SYNOPSIS

In Perl:

use Data::Unixish qw(lduxl);
my @res = lduxl([grep => {callback => sub { $_ % 2 }}], 1, 2, 3, 4, 5);
# => (1, 3, 5)

In command-line:

% echo -e "1\n2\n3\n4\n5" | dux grep '$_ % 2'
1
3
5

FUNCTIONS

grep

Usage:

grep(%args) -> [status, msg, result, meta]

Perl grep.

Filter each item through a callback.

This function is not exported.

Arguments ('*' denotes required arguments):

  • callback* => str|re|code

    The callback code or regexp to use.

  • in => array

    Input stream (e.g. array or filehandle).

  • out => any

    Output stream (e.g. array or filehandle).

Returns an enveloped result (an array).

First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

Return value: (any)

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Data-Unixish.

SOURCE

Source repository is at https://github.com/perlancar/perl-Data-Unixish.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Data-Unixish

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

SEE ALSO

grep(1)

AUTHOR

perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2017, 2016, 2015, 2014, 2013, 2012 by perlancar@cpan.org.

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