You do not need the else branch of the if, if there is nothing that you want to do if the boolean expression evaluates to false.

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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
else if if if as an Expression if as an Expression, Using Blocks if Without else Single-Line if
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