[Haskell-cafe] pattern match failure as control structure

[Dan Mead]

thanks, i've got it working

i'll probably post the code when i'm done

On Tue, Nov 10, 2009 at 3:01 PM, Nicolas Pouillard
<nicolas.pouillard at gmail.com> wrote:
> Excerpts from Dan Mead's message of Tue Nov 10 20:23:26 +0100 2009:
>> i think that may be too in depth.
>>
>> all i'm trying to do is catch a regular pattern match exception
>>
>> On Tue, Nov 10, 2009 at 5:50 AM, Roel van Dijk <vandijk.roel at gmail.com> wrote:
>> > Have a look at this recently uploaded package:
>> >
>> > http://hackage.haskell.org/package/first-class-patterns
>> >
>> > Examine the "tryMatch" function in particular.
>
> You can do this with Control.Exception.evaluate [1]. However
> while it looks like what you want I recommend you to not use
> it too often, catching "error" calls is not the best way of using
> Haskell. However if this is for debugging purpose or setting up
> a global exception catcher for a final product then this is fine.
>
>
> [1]: http://www.haskell.org/ghc/docs/latest/html/libraries/base/Control-Exception.html#8
>
> --
> Nicolas Pouillard
> http://nicolaspouillard.fr
>