1Utils(3)              User Contributed Perl Documentation             Utils(3)
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NAME

6       Array::Utils - small utils for array manipulation
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SYNOPSIS

9               use Array::Utils qw(:all);
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11               my @a = qw( a b c d );
12               my @b = qw( c d e f );
13
14               # symmetric difference
15               my @diff = array_diff(@a, @b);
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17               # intersection
18               my @isect = intersect(@a, @b);
19
20               # unique union
21               my @unique = unique(@a, @b);
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23               # check if arrays contain same members
24               if ( !array_diff(@a, @b) ) {
25                       # do something
26               }
27
28               # get items from array @a that are not in array @b
29               my @minus = array_minus( @a, @b );
30

DESCRIPTION

32       A small pure-perl module containing list manipulation routines. The
33       module emerged because I was tired to include same utility routines in
34       numerous projects.
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FUNCTIONS

37       "unique"
38           Returns an array of unique items in the arguments list.
39
40       "intersect"
41           Returns an intersection of two arrays passed as arguments, keeping
42           the order of the second parameter. A nice side effect of this
43           function can be exploited in situations as:
44
45                   @atreides = qw( Leto Paul Alia 'Leto II' );
46                   @mylist = qw( Alia Leto );
47                   @mylist = intersect( @mylist, @atreides );  # and @mylist is ordered as Leto,Alia
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49       "array_diff"
50           Return symmetric difference of two arrays passed as arguments.
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52       "array_minus"
53           Returns the difference of the passed arrays A and B (only those
54           array elements that exist in A and do not exist in B).  If an empty
55           array is returned, A is subset of B.
56
57           Function was proposed by Laszlo Forro <salmonix@gmail.com>.
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BUGS

60       None known yet
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AUTHOR

63       Sergei A. Fedorov <zmij@cpan.org>
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65       I will be happy to have your feedback about the module.
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68       This module is Copyright (c) 2007 Sergei A. Fedorov.  All rights
69       reserved.
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71       You may distribute under the terms of either the GNU General Public
72       License or the Artistic License, as specified in the Perl README file.
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WARRANTY

75       This is free software. IT COMES WITHOUT WARRANTY OF ANY KIND.
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79perl v5.34.0                      2022-01-20                          Utils(3)
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