If-Then foldable to '?:'

Last modified: 03 December 2024

Reports if-then expressions that can be folded into elvis (?:) expressions.

Example:

fun maybeFoo(): String? = "foo"

var foo = maybeFoo()
val bar = if (foo == null) "hello" else foo

The quick fix converts the if-then expression into an elvis (?:) expression:

fun maybeFoo(): String? = "foo"

var foo = maybeFoo()
val bar = foo ?: "hello"

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.

IfThenToElvis
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

Inspection options

Here you can find the description of settings available for the If-Then foldable to '?:' inspection, and the reference of their default values.

Report also on statement

Not selected

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Kotlin, 243.23126-IJ