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Unnecessary parentheses in function call with lambda

Reports redundant empty parentheses of function calls where the only parameter is a lambda that's outside the parentheses.

Use the 'Remove unnecessary parentheses from function call with lambda' quick-fix to clean up the code.


fun foo() { listOf(1).forEach() { } }

After the quick-fix is applied:

fun foo() { listOf(1).forEach { } }

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 | Redundant constructs


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