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Negated call can be simplified

Reports negation isEmpty() and isNotEmpty() for collections and String, or isBlank() and isNotBlank() for String.

Using corresponding functions makes your code simpler.

The quick-fix replaces the negation call with the corresponding call from the Standard Library.


fun main() { val list = listOf(1,2,3) if (!list.isEmpty()) { // do smth } }

After the quick-fix is applied:

fun main() { val list = listOf(1,2,3) if (list.isNotEmpty()) { // do smth } }

Locating this inspection


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

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


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