A boolean literal can be represented in two different ways: true or false. They can be combined with logical operators
(!, &&, ||, ==, !=) to produce logical expressions that represent truth values. However, comparing a boolean literal to a
variable or expression that evaluates to a boolean value is unnecessary and can make the code harder to read and understand. The more complex a
boolean expression is, the harder it will be for developers to understand its meaning and expected behavior, and it will favour the introduction of
new bugs.
Remove redundant boolean literals from expressions to improve readability and make the code more maintainable.
if (someValue == true) { /* ... */ } // Noncompliant: Redundant comparison
if (someBooleanValue != true) { /* ... */ } // Noncompliant: Redundant comparison
if (booleanMethod() || false) { /* ... */ } // Noncompliant: Redundant OR
doSomething(!false); // Noncompliant: Redundant negation
Remove redundant boolean literals to improve readability.
if (someValue) { /* ... */ }
if (!someBooleanValue) { /* ... */ }
if (booleanMethod()) { /* ... */ }
doSomething(true);