Re: Control.Exception

Jason Dagit wrote:

On Mon, Nov 3, 2008 at 6:24 AM, Simon Marlow wrote:

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Jason Dagit wrote:

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Johannes Waldmann wrote:

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with 6.10, the following does not typecheck:

foo `Control.Exception.catch` \ _ -> return bar

Ambiguous type variable `e' in the constraint: `Control.Exception.Exception e'

It is probably bad programming style anyway but what is the workaround? As long as you're aware that it is bad programming style. We deliberately didn't include an easy way to do this, because we want people to think about why they need to catch *all* exceptions (most of the time it's a bug). Since the above is bad form, what should I be doing? Could someone

On Wed, Oct 8, 2008 at 1:19 AM, Simon Marlow wrote: please provide some examples or point me at the list of exceptions that I can catch? What about catching multiple types of exceptions? Let's distinguish two kinds of exception handling:

Thanks. This helps a lot. Mind if I put it somewhere, such as on the wiki?

A good description of how to deal with exceptions would be great to have in the Haddock documentation for Control.Exception - would you (or someone else) like to write and submit a patch? Or failing that, just putting it on the wiki would be useful too. Cheers, Simon