July 2018
Intermediate to advanced
242 pages
8h 6m
English
Content preview from Kotlin Standard Library Cookbook
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Safe type-casting
Whenever we perform type-casting, we should keep in mind that it is a potential source of exceptions. That's the reason why we should always perform type-checking using the is modifier or do the casting inside the try…catch block. However, in Kotlin, we have also a safe casting option that will not throw ClassCastException but will return null instead. In this recipe, we are going to test the safe casting in action.
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