Equality check can be used instead of elvis for nullable boolean check

Last modified: 03 December 2024

Reports cases when an equality check should be used instead of the elvis operator.

Example:

fun check(a: Boolean? == null) {
    if (a ?: false) throw IllegalStateException()
}

After the quick-fix is applied:

fun check(a: Boolean? == null) {
    if (a == true) throw IllegalStateException()
}

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

NullableBooleanElvis
Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Kotlin | Style issues

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Kotlin, 243.23126-IJ