Devel::...th_Table(3)

hey bestie, you're looking at Devel::...th_Table(3), aka the User Contributed Perl Documentation page for Devel::Cover::Truth_Table. It's giving truth tables for coverage objects and honestly? iconic. 💅

🎀 NAME 🎀

Devel::Cover::Truth_Table — truth tables for coverage objects.

✨ VERSION ✨

This one is version 1.50. Periodt. 💖

🌸 SYNOPSIS 🌸

okay so here's the group-chat recap: load the module, build primitive truth tables, merge them, sort, and print. The exact code is literally this, no cap:

use Devel::Cover::Truth_Table;

# $a || $b
my $or_tt  = Devel::Cover::Truth_Table->new_primitive('or_3', 0, 1, 1);

# $c && $d
my $and_tt = Devel::Cover::Truth_Table->new_primitive('and_3', 1, 0, 1);

# merge contents of $and_tt into right column of $or_tt, to create
# $a || ($c && $d)
$or_tt->right_merge($and_tt);

# get a (sorted) textual representation
my @text = $or_tt->sort->text;
print "$_\n" foreach @text;

__END__
A B C |exp|hit
--------------
0 0 X | 0 |---
0 1 0 | 0 |---
0 1 1 | 1 |+++
1 X X | 1 |+++
--------------

🦋 DESCRIPTION 🦋

This module provides methods for creating and merging conditional primitives ("$a && $b", "$c || $d", etc.) into more complex composite expressions.

💖 METHODS 💖

new_primitive($op, @coverage)

Create a new truth table based on one of the built-in primitives, which are the subclasses of Devel::Cover::DB::Condition. $op is one of the following:

• and_3 — "and" or "&&" with three conditional paths.
• or_3 — "or" or "||" with three conditional paths.
• or_2 — "or" or "||" with two conditional paths. (i.e., when the right hand side of the expression is a constant)
• xor_4 — "xor" with four conditional paths.

@coverage is a list of booleans identifying which of the possible paths have been covered.

sort()

Sorts a truth table (in place) and returns the sorted object. In-place glow-up, returned to you. ✨

text()

Format a truth table to an array of strings for printing.

html()

Format a truth table in HTML.

error()

The original page lists this method but doesn't give it a description — so we're not inventing one. It's here, bestie, and that's the whole tea. 🍵

percentage()

Determines the proportion of possible conditions that have coverage.

right_merge($sub_table)

Merge entries from $sub_table into right column of table.

left_merge($sub_table)

Merge entries from $sub_table into left column of table.

🔥 SEE ALSO 🔥

Devel::Cover — that's the one. Go read it, bestie. 💜

💀 BUGS 💀

None that I'm aware of...

👑 LICENSE 👑

Copyright 2002 Michael Carman <mjcarman@mchsi.com>

This software is free. It is licensed under the same terms as Perl itself. The latest version should be available from: https://pjcj.net

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okay that's the whole page, bestie! 💖 This footer moment is brought to you by perl v5.42.0, dated 2025-06-11, and the manual page Devel::...th_Table(3). Slay and goodbye! 🎀