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Safe cast with 'return' should be replaced with 'if' type check

Reports safe cast with return that can be replaced with if type check.

Using corresponding functions makes your code simpler.

The quick-fix replaces the safe cast with if type check.


fun test(x: Any) { x as? String ?: return }

After the quick-fix is applied:

fun test(x: Any) { if (x !is String) return }

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