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== Noncompliant Code Example

[source,kotlin]
----
when(param) { // missing else
  1 -> doSomething()
  2 -> doSomethingElse()
}
----

== Compliant Solution

[source,kotlin]
----
when(param) {
  1 -> doSomething()
  2 -> doSomethingElse()
  else -> error("myMessage")
}
----

== Exceptions

If the ``++when++`` clause is used as an expression, Kotlin compiler already enforces that all possible cases are covered with branch conditions. So no issue will be raised in this case.


Example:

----
enum class Day {
    SUNDAY, MONDAY
}
...
val myVal = when(day) {
  MyEnum.SUNDAY -> 1
  MyEnum.MONDAY -> 2
}
----

include::../see.adoc[]

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== Implementation Specification
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include::../message.adoc[]

'''
== Comments And Links
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