[Haskell] Re: Exceptions
Benjamin.Rudiak-Gould at cl.cam.ac.uk
Tue Nov 23 16:17:41 EST 2004
John Goerzen wrote:
>main = do
> xs <- return [ 1, 2, error "throw" ]
> `catch` \ any -> do
> putStrLn "caught"
> return [ 4, 5, 6 ]
> print xs
>When run, I get: Fail: throw
>In any case, in the more general case, I don't see a problem with that.
>I get an exception when I try to use something. That's fine. In an
>imperative program that solves the same problem the same way, you'd see
>the exception at the same point.
No, in a traditional (strict) programming language the program would print
The exception "throw" would not appear in the output.
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