[Haskell-cafe] ErrorT and catchError question

[Adam Smyczek]

Ups, resend, first response did not make into the list.
On Jan 14, 2008, at 9:33 PM, Brandon S. Allbery KF8NH wrote:

>
> On Jan 15, 2008, at 0:28 , Adam Smyczek wrote:
>
>> It's probably a trivial question, but I cannot figure out
>> how to implement the catchError function in:
>>
>> instance MonadError String Shell where
>> 	throwError      = error . ("Shell failed: "++)
>> 	catchError l h = ???
>
> Take a look at Control.Exception.catch for starters.

No, did not help and
going over the source code of Control.Monad.Error did not
help as well. Does someone have other tips for me?
Thanks,
Adam

> --  
> brandon s. allbery [solaris,freebsd,perl,pugs,haskell]  
> allbery at kf8nh.com
> system administrator [openafs,heimdal,too many hats]  
> allbery at ece.cmu.edu
> electrical and computer engineering, carnegie mellon university     
> KF8NH
>
>