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Two comparisons should be converted to a range check

Reports two consecutive comparisons that can be converted to a range check.

Checking against a range makes code simpler by removing test subject duplication.


fun checkMonth(month: Int): Boolean { return month >= 1 && month <= 12 }

The quick-fix replaces the comparison-based check with a range one:

fun checkMonth(month: Int): Boolean { return month in 1..12 }

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