[Haskell-cafe] CIS 194 not compiling under new GHC

[Borys Kopeć]

Thank you Brent for answering. I'll continue with the course and try to
update the code framework as necessary.

If there happens to be a problem that I cannot solve (since it goes outside
of my beginner's knowledge scope) is it okay for me to write to you?

On Sun, 6 Nov 2022 at 21:26, Brent Yorgey <byorgey at gmail.com> wrote:

> https://github.com/byorgey/haskell-course is the canonical github repo
> with the materials (though unfortunately I think most people get the
> material from the upenn-hosted site, which I no longer have access to).
> I'm very happy to take PRs with updates.
>
> -Brent
>
> On Sun, Nov 6, 2022 at 12:48 PM Jeff Clites via Haskell-Cafe <
> haskell-cafe at haskell.org> wrote:
>
>> > On Nov 6, 2022, at 9:47 AM, Borys Kopeć <boryskopec00 at gmail.com> wrote:
>> >
>> > I know I could google each one, make the compiler happy and then get on
>> with exercises but I think that this is not an optimal learning experience.
>>
>> Not ideal, but it would be worth giving it a try and seeing if you can
>> push through, because deciphering compiler errors are something you will
>> have to deal with when writing your solutions, so it's educational in its
>> own way. It might turn out to be just a few things that need fixing up.
>>
>> > Also I don't know whether all exercises are even sensical with new
>> features being added.
>>
>> I would think they probably are still relevant; the language concepts
>> haven't changed.
>>
>>
>> (I did some quick Googling to see if anyone had put an updated version on
>> GitHub, but I didn't turn anything up. There are a bunch of repos with
>> exercise solutions, so some of them might contain updates to the provided
>> sources but I didn't dig into it.)
>>
>> Jeff
>>
>> > On Sun, 6 Nov 2022 at 18:44, Brandon Allbery <allbery.b at gmail.com>
>> wrote:
>> > This being a beginners course, it would still be better if it were
>> > kept up to date with such changes instead of requiring newcomers to
>> > know about them. Byorgey?
>> >
>> > On Sun, Nov 6, 2022 at 12:42 PM David Feuer <david.feuer at gmail.com>
>> wrote:
>> > >
>> > > The changes needed to make it work should be minor. Since you call
>> out the chapter on monoids, any Monoid instance now needs a Semigroup
>> instance.
>> > >
>> > > Before:
>> > >
>> > > instance Monoid X where
>> > >   mappend a b = ...
>> > >   mempty = ...
>> > >
>> > > Now:
>> > >
>> > > instance Semigroup X where
>> > >   a <> b = ...
>> > > instance Monoid X where
>> > >   -- mappend no longer needs to be defined
>> > >   mempty = ...
>> > >
>> > > On Sun, Nov 6, 2022, 12:37 PM Borys Kopeć <boryskopec00 at gmail.com>
>> wrote:
>> > >>
>> > >> Hi all,
>> > >>
>> > >> I've been working through the CIS 194 course recently and
>> unfortunately from lecture 7 onwards the code is not compliant with current
>> compiler.
>> > >>
>> > >> I can still follow the lectures but I'd like to do every homework
>> exercise. Unfortunately most homework exercises provide you with a code
>> framework to work with and this code does not compile.
>> > >>
>> > >> Do any of you know about updated versions or corrections to this
>> course? I believe there could be a repo where someone is keeping the
>> course's homework up to date because this course is still quite popular.
>> > >>
>> > >> Regards
>> > >> Borys
>> >
>> > --
>> > brandon s allbery kf8nh
>> > allbery.b at gmail.com
>>
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