rspec/rules/S3026/rule.adoc
2021-01-27 13:42:22 +01:00

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There's no need to null-test a variable before an ``++instanceof++`` test because ``++instanceof++`` tests for ``++null++``. Similarly, there's no need to null-test a variable before dereferencing _some other_ object.
== Noncompliant Code Example
----
if (myVar != null && myVar instanceof MyClass) { // Noncompliant
// ...
} else if (myVar != null && myOtherVar.equals(myVar) { // Noncompliant
// ...
}
----
== Compliant Solution
----
if (myVar instanceof MyClass) {
// ...
} else if (myVar != null && myVar.equals(myOtherVar) {
// ...
}
----