NAME

Data::Unixish::cond - Apply dux function conditionally

VERSION

This document describes version 1.47 of Data::Unixish::cond (from Perl distribution Data-Unixish), released on 2014-06-12.

SYNOPSIS

In Perl:

 use Data::Unixish qw(lduxl);
 my @res = lduxl([cond => {if => sub { $. % 2 }, then=>'uc', else=>'lc'}], "i", "love", "perl", "and", "c");
 # => ("i", "LOVE", "perl", "AND", "c")

In command-line:

 % echo -e "i\nlove\nperl\nand\nc" | dux cond --if '$. % 2' --then uc --else lc
 i
 LOVE
 perl
 AND
 c

FUNCTIONS

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

Apply dux function conditionally.

This dux function takes a condition (a Perl code/expression) and one or two other dux functions (A and B). Condition will be evaluated for each item (where $_ will be set to the current item). If condition evaluates to true, then A is applied to the item, else B. All the dux functions must be itemfunc.

Arguments ('*' denotes required arguments):

• else => array|str

  dux function to be applied if condition is false.

• if* => code|str

  Perl code that specifies the condition.

• in => any

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

• out => any

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

• then* => array|str

  dux function to be applied if condition is true.

Return value:

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.

HOMEPAGE

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

SOURCE

Source repository is at https://github.com/sharyanto/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.

AUTHOR

Steven Haryanto <stevenharyanto@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2014 by Steven Haryanto.

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