UnnecessarySafeNavigationOperator.md

Pattern: Unnecessary ?.

Issue: -

Description

Checks for the safe navigation operator (?.) applied to constants and literals, or this or super, or constructor calls, all of which can never be null.

Example of violations:

def someMethod() {
    "abc"?.bytes            // violation
    [1,2]?.getSize()        // violation
    [abc:123]?.name         // violation
    [:]?.toString()         // violation
    123?.class              // violation
    123.45?.getClass()      // violation
    Boolean.FALSE?.class    // violation
    Boolean.TRUE?.class     // violation
    this?.class             // violation
    super?.getClass()       // violation
    new Long(100)?.class    // violation
}

Further Reading

• CodeNarc - UnnecessarySafeNavigationOperator