[reactive] Re: black hole detection and concurrency

Sittampalam, Ganesh ganesh.sittampalam at credit-suisse.com
Mon Jan 5 03:04:29 EST 2009

> On Sun, Jan 04, 2009 at 07:40:38PM -0500, Isaac Dupree wrote:
> > - does anyone use mapException?

> I was the one who originally requested it, since it was mentioned
> in the paper and looked reasonable, but was missing from GHC.
> My motivation was that it could be used by a pure function to 
> hide the exception behavior of an auxiliary function that it used 
> internally. I can't really claim to have used it very much, though.

I use it sometimes to provide a pseudo "call-stack" for errors.


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