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Covariant 'equals()'

Reports equals() that takes an argument type other than Any? if the class does not have another equals() that takes Any? as its argument type.


class Foo { fun equals(other: Foo?): Boolean { return true } }

To fix the problem create equals() method that takes an argument of type Any?.

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 | Probable bugs


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