Redundant SAM constructor

Last modified: 03 December 2024

Reports SAM (Single Abstract Method) constructor usages which can be replaced with lambdas.

Example:

fun main() {
    foo(Runnable { println("Hi!") })
}

fun foo(other: Runnable) {}

After the quick-fix is applied:

fun main() {
    foo( { println("Hi!") })
}

fun foo(other: Runnable) {}

Locating this inspection

By ID

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

RedundantSamConstructor
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

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Kotlin, 243.23126-IJ