Verbose nullability and emptiness check

Reports combination of null and emptiness checks that can be simplified into a single check.

The quick-fix replaces highlighted checks with a combined check call, such as isNullOrEmpty().

Example:

  fun test(list: List<Int>?) {
      if (list == null || list.isEmpty()) {
          println("List is empty!")
      } else {
          println(list.joinToString())
      }
  }

After the quick-fix is applied:

  fun test(list: List<Int>?) {
      if (list.isNullOrEmpty()) {
          println("List is empty!")
      } else {
          println(list.joinToString())
      }
  }

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.

VerboseNullabilityAndEmptiness

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

Availability

By default bundled with: IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin: Kotlin, 241.18072-IJ

Last modified: 18 June 2024