Re: [Haskell-cafe] error handling (esp. IO/exceptions)

On Tue, 14 Apr 2009, Miguel Mitrofanov wrote:

What about ErrorT monad transformer? Well, if it's not what you really want, you can define your own one without ugly "Error" class, so it'd be something like

execute :: FilePath -> [String] -> MyCoolErrorT ExecuteError IO ExitCode

My MyCoolErrorT is named Control.Monad.Exception.Synchronous.ExceptionalT and can be found in the explicit-exception package. In contrast to ErrorT it puts no restrictions on the exception type.