Redundant 'Unit'
Reports redundant Unit expressions.
Unit in Kotlin can be used as the return type of functions that do not return anything meaningful. The Unit type has only one possible value, which is the Unit object.
Examples:
fun redundantA(): Unit {
return Unit // redundant, 'Unit' is returned by default and matches the expected return type
}
fun requiredA(condition: Boolean): Any {
if (condition) return "hello"
return Unit // explicit 'Unit' is required since the expected type is 'Any'
}
fun redundantB(condition: Boolean): Any = if (condition) {
fun ancillary(): Int = 1
println("${ancillary()}")
Unit // redundant since the last expression is already of type 'Unit'
} else {
println("else")
}
fun requiredB(condition: Boolean): Any = if (condition) {
1024
Unit // required, otherwise '1024' (Int) would be the return value
} else {
println("else")
}- 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.
RedundantUnitExpression
You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:
//noinspection RedundantUnitExpressionnote
Actual comment syntax will depend on the code language you are working with
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
Inspection Details | |
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By default bundled with: |