[Haskell-beginners] Beginners Digest, Vol 154, Issue 7

[Michael Turner]

Ah, thank you. I just went with the more up-to-date version of the
code, and didn't look at the original.

Regards,
Michael Turner
Executive Director
Project Persephone
1-25-33 Takadanobaba
Shinjuku-ku Tokyo 169-0075
Mobile: +81 (90) 5203-8682
turner at projectpersephone.org

Understand - http://www.projectpersephone.org/
Join - http://www.facebook.com/groups/ProjectPersephone/
Donate - http://www.patreon.com/ProjectPersephone
Volunteer - https://github.com/ProjectPersephone

"Love does not consist in gazing at each other, but in looking outward
together in the same direction." -- Antoine de Saint-Exupéry

On Tue, May 18, 2021 at 9:06 PM <beginners-request at haskell.org> wrote:
>
> Send Beginners mailing list submissions to
>         beginners at haskell.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
>         http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
> or, via email, send a message with subject or body 'help' to
>         beginners-request at haskell.org
>
> You can reach the person managing the list at
>         beginners-owner at haskell.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Beginners digest..."
>
>
> Today's Topics:
>
>    1.  Type inference or just ... a typo in a paper? (Michael Turner)
>    2. Re:  Type inference or just ... a typo in a       paper?
>       (Francesco Ariis)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 18 May 2021 17:24:37 +0900
> From: Michael Turner <michael.eugene.turner at gmail.com>
> To: beginners at haskell.org
> Subject: [Haskell-beginners] Type inference or just ... a typo in a
>         paper?
> Message-ID:
>         <CANHeBigjUrGkKJAr44PS9WYATQDwvjNdWM_zC9DYcvcfA_dMaA at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> I've inherited some Haskell code, which you can find here:
>
> http://web.cecs.pdx.edu/~mpj/pubs/aug.html
>
> The text of the accompanying paper says, "we extend the Text class..."
> -- but the identifier "Text" appears nowhere in the code. Is this just
> an error in the paper, or is the Text class getting involved in some
> indirect way, e.g. through String or perhaps because of the line
> "instance Show Tree where . . ."?
>
>
> Regards,
> Michael Turner
> Executive Director
> Project Persephone
> 1-25-33 Takadanobaba
> Shinjuku-ku Tokyo 169-0075
> Mobile: +81 (90) 5203-8682
> turner at projectpersephone.org
>
> Understand - http://www.projectpersephone.org/
> Join - http://www.facebook.com/groups/ProjectPersephone/
> Donate - http://www.patreon.com/ProjectPersephone
> Volunteer - https://github.com/ProjectPersephone
>
> "Love does not consist in gazing at each other, but in looking outward
> together in the same direction." -- Antoine de Saint-Exupéry
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 18 May 2021 13:30:58 +0200
> From: Francesco Ariis <fa-ml at ariis.it>
> To: beginners at haskell.org
> Subject: Re: [Haskell-beginners] Type inference or just ... a typo in
>         a       paper?
> Message-ID: <20210518113058.GB879 at extensa>
> Content-Type: text/plain; charset=utf-8
>
> Hello Michael,
>
> Il 18 maggio 2021 alle 17:24 Michael Turner ha scritto:
> > I've inherited some Haskell code, which you can find here:
> >
> > http://web.cecs.pdx.edu/~mpj/pubs/aug.html
> >
> > The text of the accompanying paper says, "we extend the Text class..."
> > -- but the identifier "Text" appears nowhere in the code. Is this just
> > an error in the paper, or is the Text class getting involved in some
> > indirect way, e.g. through String or perhaps because of the line
> > "instance Show Tree where . . ."?
>
> In the updated source (`augupdated.hs`) that is missing, but in the
> /original/ one (`aug.hs`) I read at line 255
>
>     instance Text Tree where
>
> Which was then replaced with:
>
>     instance Show Tree where
>
> in the updated version.
>
> Weird to know something like `Show` was not named like that in the early
> nineties!
> —F
>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> Beginners mailing list
> Beginners at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
>
> ------------------------------
>
> End of Beginners Digest, Vol 154, Issue 7
> *****************************************