1Tree::Simple::Visitor::UPsoesrtOCrodnetrrTirbauTvtreeerdes:aP:leS(ri3lm)pDloec:u:mVeinstiattoiro:n:PostOrderTraversal(3)
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NAME

6       Tree::Simple::Visitor::PostOrderTraversal - A Visitor for post-order
7       traversal a Tree::Simple hierarchy
8

SYNOPSIS

10         use Tree::Simple::Visitor::PostOrderTraversal;
11
12         # create an visitor
13         my $visitor = Tree::Simple::Visitor::PostOrderTraversal->new();
14
15         # pass our visitor to the tree
16         $tree->accept($visitor);
17
18         # print our results
19         print join ", " => $visitor->getResults();
20
21         # this will print this:
22         #   1.1.1 1.1 1.2 1 2.1 2 3.1 3
23         # assuming your tree is like this:
24         #   1
25         #     1.1
26         #       1.1.1
27         #     1.2
28         #   2
29         #     2.1
30         #   3
31         #     3.1
32

DESCRIPTION

34       Post-order traversal is a variation of the depth-first traversal in
35       which the sub-tree's are processed before the parent. It is another
36       alternative to Tree::Simple's "traverse" method which implements a
37       depth-first, pre-order traversal.
38

METHODS

40       new There are no arguments to the constructor the object will be in its
41           default state. You can use the "setNodeFilter" method to customize
42           its behavior.
43
44       includeTrunk ($boolean)
45           Based upon the value of $boolean, this will tell the visitor to
46           include the trunk of the tree in the traversal as well.
47
48       setNodeFilter ($filter_function)
49           This method accepts a CODE reference as its $filter_function
50           argument and throws an exception if it is not a code reference.
51           This code reference is used to filter the tree nodes as they are
52           collected. This can be used to customize output, or to gather
53           specific information from a more complex tree node. The filter
54           function should accept a single argument, which is the current
55           Tree::Simple object.
56
57       visit ($tree)
58           This is the method that is used by Tree::Simple's "accept" method.
59           It can also be used on its own, it requires the $tree argument to
60           be a Tree::Simple object (or derived from a Tree::Simple object),
61           and will throw and exception otherwise.
62
63       getResults
64           This method returns the accumulated results of the application of
65           the node filter to the tree.
66

BUGS

68       None that I am aware of. Of course, if you find a bug, let me know, and
69       I will be sure to fix it.
70

CODE COVERAGE

72       See the CODE COVERAGE section in Tree::Simple::VisitorFactory for more
73       information.
74

SEE ALSO

76       These Visitor classes are all subclasses of Tree::Simple::Visitor,
77       which can be found in the Tree::Simple module, you should refer to that
78       module for more information.
79

AUTHOR

81       stevan little, <stevan@iinteractive.com>
82

84       Copyright 2004, 2005 by Infinity Interactive, Inc.
85
86       <http://www.iinteractive.com>
87
88       This library is free software; you can redistribute it and/or modify it
89       under the same terms as Perl itself.
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93perl v5.30.0                      2T0r1e9e-:0:7S-i2m6ple::Visitor::PostOrderTraversal(3)
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