Is there something like `IO` (lazy, safe, etc.) th...

# arrow

[Ryan Benasutti]

Is there something like IO (lazy, safe, etc.) that does not use Throwable for the error type? My main issue is that IO.raiseError needs a Throwable and in my use case, constructing a stacktrace is too expensive.

[Robert Menke]

BiFunctorIO is coming soon afaik which is exactly what you’re describing.

[Ryan Benasutti]

Any estimates on the delivery time for that?

[Robert Menke]

Not sure, but it’s in the works now I believe.

[aballano]

I think the estimations aim for end of 2019

[raulraja]

you can avoid constructing a stack trace by overriding fillInStackTrace

[raulraja]

and returning yourself as a Throwable