Im browsing a bit the code from Result.kt in stdli...

# codingconventions

[George]

Im browsing a bit the code from Result.kt in stdlib. Im wondering how come runCatching() does not catch Exception instead of Throwable ? Shouldn't we always let errors such as StackOverflow be thrown ?

[phldavies]

It’s probably worth reading the design document around the kotlin.Result class for a better understanding. https://github.com/Kotlin/KEEP/blob/master/proposals/stdlib/result.md

[phldavies]

In short, the Result class was primarily added to support the Continuation callback interface (which needed to accept any failure to resume with) - it really should be avoided for use in “normal” code in favour of domain-specific types, and/or try/catch with explicit catches. runCatching catching Throwable is indeed something to be cautious of as it will inevitably trip you up in the future.