[Haskell-cafe] testing for exceptions

[Tom Ellis]

On Sat, Oct 31, 2015 at 11:46:15AM +0100, Roelof Wobben wrote:
> Op 31-10-2015 om 11:40 schreef Darren Grant:
> >
> >Unfrotunately the answer to this is not simple:
> >
> >http://stackoverflow.com/questions/4243117/how-to-catch-and-ignore-a-call-to-the-error-function
> >
> >'error' more or less terminates the program in an unreasonable way.
> >
> >It would be preferable for f2 to result in a type that can contain
> >the error result to be parsed.
>
> So I have to change the type of f2.
> 
> To what do I have to change it to make it testable.

For example, Integer -> Maybe Integer