[Haskell-cafe] ErrorT and catchError question
adam.smyczek at gmail.com
Tue Jan 15 22:05:57 EST 2008
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?
> 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
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