1MooseX::Iterator(3)   User Contributed Perl Documentation  MooseX::Iterator(3)
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NAME

6       MooseX::Iterator - Iterate over collections
7

SYNOPSIS

9       Access the Iterator directly:
10
11           use Moose;
12           use MooseX::Iterator;
13
14           my $iter = MooseX::Iterator::Array->new( collection => [ 1, 2, 3, 4, 5, 6 ] );
15
16           my $count = 1;
17           while ( $iter->has_next ) {
18               print $iter->next;
19           }
20
21       Or use the meta class:
22
23           package TestIterator;
24
25           use Moose;
26           use MooseX::Iterator;
27
28           has collection => (
29               is      => 'ro',
30               isa     => 'HashRef',
31               default => sub { { one => '1', two => '2', three => '3' } },
32           );
33
34           has iter => (
35               metaclass    => 'Iterable',
36               iterate_over => 'collection',
37           );
38
39           no Moose;
40
41           package main;
42           use Data::Dumper;
43
44           my $test = TestIterator->new;
45
46           my $iter = $test->iter;
47
48           while ( $iter->has_next ) {
49               my $next = $iter->next;
50               print $next->{'key'}   . "\n";
51               print $next->{'value'} . "\n";
52           }
53

DESCRIPTION

55       This is an attempt to add smalltalk-like streams to Moose. It currently
56       works with ArrayRefs and HashRefs.
57
58       next
59           The next method provides the next item in the colletion.
60
61             For arrays it returns the element of the array
62
63             For hashs it returns a pair as a hashref with the keys: key and value
64
65       has_next
66           The has_next method is a boolean method that is true if there is
67           another item in the colletion after the current item. and falue if
68           there isn't.
69
70       peek
71           The peek method returns the next item without moving the state of
72           the iterator forward. It returns undef if it is at the end of the
73           collection.
74
75       reset
76           Resets the cursor, so you can iterate through the elements again.
77
78       Subclassing MooseX::Iterator::Meta::Iterable
79           When subclassing MooseX::Iterator::Meta::Iterable for your own
80           iterators override
81           MooseX::Iterator::Meta::Iterable::_calculate_iterator_class_for_type
82           to returns the name of the class that iterates over your new
83           collection type. The class must implement the
84           MooseX::Iterator::Role role.
85

AUTHOR

87       Robert Boone <rlb@cpan.org>
88
89       And thank you to Steven Little (steven) and Matt Trout (mst) for the
90       help and advice they gave.
91

CONTRIBUTORS

93       Johannes Plunien
94

Code Repository

96        Git - http://github.com/rlb3/moosex-iterator/tree/master
97

99       This library is free software; you can redistribute it and/or modify it
100       under the same terms as Perl itself.
101

POD ERRORS

103       Hey! The above document had some coding errors, which are explained
104       below:
105
106       Around line 96:
107           '=item' outside of any '=over'
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111perl v5.34.0                      2022-01-21               MooseX::Iterator(3)
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