1Devel::Cover::Truth_TabUlsee(r3)Contributed Perl DocumenDteavteilo:n:Cover::Truth_Table(3)
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NAME

6       Devel::Cover::Truth_Table - Create and manipulate truth tables for cov‐
7       erage objects.
8

SYNOPSIS

10         use Devel::Cover::Truth_Table;
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12         # $a ⎪⎪ $b
13         my $or_tt  = Devel::Cover::Truth_Table->new_primitive('or_3', 0, 1, 1);
14
15         # $c && $d
16         my $and_tt = Devel::Cover::Truth_Table->new_primitive('and_3', 1, 0, 1);
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18         # merge contents of $and_tt into right column of $or_tt, to create
19         # $a ⎪⎪ ($c && $d)
20         $or_tt->right_merge($and_tt);
21
22         # get a (sorted) textual representation
23         my @text = $or_tt->sort->text;
24         print "$_\n" foreach @text;
25
26         __END__
27         A B C ⎪exp⎪hit
28         --------------
29         0 0 X ⎪ 0 ⎪---
30         0 1 0 ⎪ 0 ⎪---
31         0 1 1 ⎪ 1 ⎪+++
32         1 X X ⎪ 1 ⎪+++
33         --------------
34

DESCRIPTION

36       This module provides methods for creating and merging conditional prim‐
37       itives ("$a && $b", "$c ⎪⎪ $d", etc.) into more complex composite
38       expressions.
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METHODS

41       new_primitive($op, @coverage)
42
43       Create a new truth table based on one of the built-in primitives, which
44       are the subclasses of Devel::Cover::DB::Condition. $op is one of the
45       following:
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47       and_3
48           "and" or "&&" with three conditional paths.
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50       or_3
51           "or" or "⎪⎪" with three conditional paths.
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53       or_2
54           "or" or "⎪⎪" with two conditional paths. (i.e., when the right hand
55           side of the expression is a constant)
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57       xor_4
58           "xor" with four conditional paths.
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60       @coverage is a list booleans identifying which of the possible paths
61       have been covered.
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63       sort()
64
65       Sorts a truth table (in place) and returns the sorted object.
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67       text()
68
69       Format a truth table to an array of strings for printing.
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71       html()
72
73       Format a truth table in HTML.
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75       error()
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77       percentage()
78
79       Determines the proportion of possible conditions that have coverage.
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81       right_merge($sub_table)
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83       Merge entries from $sub_table into right column of table.
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85       left_merge($sub_table)
86
87       Merge entries from $sub_table into left column of table.
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SEE ALSO

90       Devel::Cover
91

BUGS

93       None that I'm aware of...
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VERSION

96       Version 0.61 - 10th January 2007
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LICENSE

99       Copyright 2002 Michael Carman <mjcarman@mchsi.com>
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101       This software is free. It is licensed under the same terms as Perl
102       itself. The latest version should be available from:
103       http://www.pjcj.net
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107perl v5.8.8                       2007-01-10      Devel::Cover::Truth_Table(3)
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