Why kotlin allows such code? :wink: ```throw throw RuntimeException("i am double throw")```

# random

[Olek Brzozowski]

Why kotlin allows such code? 😉

throw throw RuntimeException("i am double throw")

[kqr]

I guess it is related to try/catch being expression and throw "returning" Nothing

[Youssef Shoaib [MOD]]

throw is of type Nothing , which can be used everywhere and anywhere. This example obviously is silly, but a more realistic one is:

throw if(conditionToThrowCustomException) prepareAndThrowCustomException() else RuntimeException("something else failed")

[Youssef Shoaib [MOD]]

Now sure, you can refactor this to not require the Nothing "quirk", but it is still pretty useful and it isn't unintuitive per se

[Ignat Beresnev]

Something similar with return has been discussed here 🙂

https://kotlinlang.slack.com/archives/C09222272/p1645799061136249

[Olek Brzozowski]

thanks 😉

[christophsturm]

does idea warn about it?