[Haskell-cafe] Errors in non-monadic code

[Tobias Dammers]

Except that people generally don't seem to agree what constitutes
'exceptional', even when disregarding the python world...
On Aug 19, 2013 9:24 PM, "Brandon Allbery" <allbery.b at gmail.com> wrote:

> On Mon, Aug 19, 2013 at 2:59 PM, <jabolopes at google.com> wrote:
>
>> I'd say that if you were in the context of the IO monad, maybe you'd
>> prefer to use exceptions instead of 'Either' or 'Maybe'.
>>
>
> Even in IO, exceptions should be reserved for truly exceptional conditions
> (of the "program cannot safely continue" variety), not merely for error
> checking when this can be described as a normal flow of evaluation.
> Exceptions are not simply alternative flow of control, even in procedural
> languages; they are *disruptions* of flow of control.
>
> --
> brandon s allbery kf8nh                               sine nomine
> associates
> allbery.b at gmail.com
> ballbery at sinenomine.net
> unix, openafs, kerberos, infrastructure, xmonad
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>
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