Another way to use when is to skip the initial expression. In that case, what had been simple values (left hand side of the -> cases) are now boolean expressions. The first of those expressions to return true is used; if all return false, the else case is used (if there is one).

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break Statements Capturing Values in when continue Statements else if if if as an Expression if as an Expression, Using Blocks if Without else Single-Line if when when as an Expression when with Commas when with Expressions for Branches when with Ranges when Without an Expression when Works with Any Type while
Capturing Values in when enum and when() when when as an Expression when with Commas when with Expressions for Branches when with Ranges when Without an Expression when Works with Any Type
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