}else->{ print("large than 2 is not ok") } } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.
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Kotlin when matches its argument against all branches sequentially until some branch condition is satisfied. It can be used either as an expression or as a statement. If it is used as an expression, the value of the satisfied branch becomes the value of the overall expression. Kotlin when sim...
This is loosely equivalent to the default of a switch() statement. 3.1. Exhaustive when() Without else() In some cases, the when() expression in Kotlin can be exhaustive and not require the else() clause. As we noted above, all when() expressions need to be exhaustive, meaning they ...
If you’ve written code in some other languages such as Java or C, you might have used a switch statement. One important difference between a switch statement and Kotlin’s when expression is that switch statements have fall-through, which means that when one condition matches, all statements...
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Let’s consider a Kotlin code snippet where the warning appears: fun getErrorCode(type: String): String { when (type) { "error" -> return "404" "success" -> return "200" else -> return "Unknown type" } } Each branch of the when expression contains a return statement in this examp...
你可以把when(votersAge)看作一个表达式，在这种情况下，它的计算结果是Int。在when的主体中，逻辑根据...
In this article, You’ll learn how to use Kotlin’s control flow expressions and statements which includes conditional expressions like if, if-else, when and looping statements like for, while, and do-while. If Statement The If statement allows you to specify a section of code that is execu...