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Control Flow

3 roadmaps31 questions

Branching and looping in Kotlin, where most constructs are expressions rather than statements: if, when with its exhaustiveness rules, for over ranges and iterables, and labeled jumps. Interviewers use this group to check that you have stopped reaching for switch and the ternary operator.

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Beyond `return@label`, how are labels (`this@label`) used to disambiguate receivers in nested lambdas with receivers, and how does this relate to return labels?

level: seniorimportance: nice to knowfreq 25%

basics

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The same @label names that target return@label also qualify this@label. In nested blocks with receivers (like apply inside apply), this@outerLabel lets you reach an outer receiver instead of the innermost one.

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