1.2.602. Is Actually Zero¶
This addition actually may be simplified because one term is actually negated by another.
This kind of error happens when the expression is very large : the more terms are included, the more chances are that some auto-annihilation happens.
This error may also be a simple typo : for example, calculating the difference between two consecutive terms.
<?php
// This is quite obvious
$a = 2 - 2;
// This is obvious too. This may be a typo-ed difference between two consecutive terms.
// Could have been $c = $fx[3][4] - $fx[3][3] or $c = $fx[3][5] - $fx[3][4];
$c = $fx[3][4] - $fx[3][4];
// This is less obvious
$a = $b[3] - $c + $d->foo(1,2,3) + $c + $b[3];
?>
1.2.602.1. Suggestions¶
Clean the code and remove the null sum
Fix one of the variable : this expression needs another variable here
When adding differences, calculate the difference in a temporary variable first.
1.2.602.2. Specs¶
Short name |
Structures/IsZero |
Rulesets |
|
Exakat since |
0.12.15 |
PHP Version |
All |
Severity |
Minor |
Time To Fix |
Instant (5 mins) |
Precision |
High |
Examples |
|
Available in |