The object supplied to when can be from any source, such as a function. And, if you want, you can assign that value to a property, so you can reference it from your branches, such as we do here in the else branch.

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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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