Re: [Haskell-cafe] How to catch exception within the Get monad (the Binary package)

On 07.09.2010 20:51, Henning Thielemann wrote:

This solution looks very ugly to me. Catching 'error's is debugging, but parser failure is kind of exception handling. I guess, the errors you want to catch are caused by non-supported fail method, right? Can't you use a monad transformer like explicit-exception:Synchronous.Exception or transformers:ErrorT around the Binary parser?

ErrorT is useless here since it cannot intercept calls to 'error'. Same should be the case with ExcepcionalT. There is also performance penalty