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Unnecessary local variable

Reports local variables that are used only in the very next return statement or are exact copies of other variables.

Such variables can be safely inlined to make the code more clear.

Example:

fun sum(a: Int, b: Int): Int { val c = a + b return c }
fun sum(a: Int, b: Int): Int { return a + b }

Configure the inspection:

Use the Report immediately returned variables option to report immediately returned variables. When given descriptive names, such variables may improve the code readability in some cases, that's why this option is disabled by default.

Inspection options

Here you can find the description of settings available for the Unnecessary local variable inspection, and the reference of their default values.

Report immediately returned variables

Not selected

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin:

Kotlin, 241.14841-IJ

Last modified: 12 March 2024