[Haskell-cafe] Re: Why purely in haskell?

Stefan Monnier monnier at iro.umontreal.ca
Tue Jan 15 22:30:36 EST 2008

> Yes, this is a doctrinal problem. Since *any* concrete reaction, e.g., an
> error message is a kind of answer, the only - unusable as it is - way of
> not providing it is to fail the termination...

You can just disallow the call, using the type system.
Not that it's always easy or practical either, mind you.


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