Is there any way to get an exception that was caug...

# coroutines

[dave08]

Is there any way to get an exception that was caught in produce on the receiving end (apart from a sealed class, all I need is a Long progress value, and it's a pity to have to box/unbox them unecessarily)?

[Michal Fudala]

could you give some example code ?

[dave08]

https://play.kotlinlang.org/#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

[dave08]

If you remove the try/catch in produce, it crashes.

[dave08]

And on the receiving side, I have no idea why...

[Michal Fudala]

https://play.kotlinlang.org/#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

[Michal Fudala]

isn't this what you want ?

[dave08]

No since when you remove the try/catch in produce: https://play.kotlinlang.org/#eyJ2ZXJzaW9uIjoiMS4zLjAiLCJwbGF0Zm9ybSI6ImphdmEiLCJhcmdzIjoiIiwibm9uZU1hcmtlcnMiOnRydWUsInRoZW1lIjoiaWRlYSIsImZvbGRlZEJ1dHRvbiI6dHJ1ZSwicmVhZE9ubHkiOmZhbHNlLCJjb2RlIjoiaW1wb3J0IGtvdGxpbnguY29yb3V0aW5lcy4qXG5pbXBvcnQga290bGlueC5jb3JvdXRpbmVzLmNoYW5uZWxzLipcblxuc3VzcGVuZCBmdW4gbWFpbigpIHtcbiAgICBDb3JvdXRpbmVTY29wZShKb2IoKSArIERpc3BhdGNoZXJzLklPKS5hcHBseSB7XG4gICAgICAgIHZhbCBjID0gcHJvZHVjZTxMb25nPiB7XG4gICAgICAgICAgICBzZW5kKDFMKVxuICAgICAgICAgICAgc2VuZCgyTClcbiAgICAgICAgICAgIFxuICAgICAgICAgICAgdGhyb3cgRXhjZXB0aW9uKFwiXCIpXG5cbiAgICAgICAgICAgIHNlbmQoM0wpXG4gICAgICAgIH1cbiAgICAgICAgXG4gICAgICAgIGMuY29uc3VtZUVhY2gge1xuICAgICAgICAgICAgdHJ5IHtcbiAgICAgICAgICAgICAgICBwcmludGxuKGl0KVxuICAgICAgICAgICAgfSBjYXRjaChlOiBFeGNlcHRpb24pIHtcbiAgICAgICAgICAgICAgICBwcmludGxuKFwiQ2F1Z2h0IGV4Y2VwdGlvblwiKVxuICAgICAgICAgICAgfVxuICAgICAgICAgICAgXG4gICAgICAgIH1cbiAgICAgICAgXG4gICAgICBcbiAgICB9XG4gICAgXG59In0=
I don't need the exception just for logging, I need it for handling errors at the caller side...