# Remove Double Negations
# Properties
| Property | Value |
|---|---|
| Rule ID | RemoveDoubleNegation |
| First seen in jSparrow version | 2.7.0 |
| Minimum Java version | 1.1 |
| Remediation cost | 2 min |
| Links |
# Description
Removes pairs of negations from boolean expressions until only zero or one negation is left.
# Benefits
Improves the readability of the code, by removing cascaded negations of boolean expressions.
# Code Changes
# Example based on an even number of negations
Pre
boolean a = !!true; // 2 times
Post
boolean a = true; // removed negations completely
# Example based on an odd number of negations
Pre
boolean a = !!!true; // 3 times
Post
boolean a = !true; // reduced to one time
Automatic Application of This Rule
The automatic application of this rule is supported in the following jSparrow versions:
# Tags
1
You & jSparrow
