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Today's Topics:
1. What's this [f| data |] ?? (Carlos J. G. Duarte)
2. Re: What's this [f| data |] ?? (Jack Henahan)
3. Re: What's this [f| data |] ?? (David McBride)
4. Re: What's this [f| data |] ?? (Brent Yorgey)
5. Re: What's this [f| data |] ?? (Felipe Almeida Lessa)
6. Re: What's this [f| data |] ?? (Felipe Almeida Lessa)
7. Re: Using tls-extra for simple smtp (Henk-Jan van Tuyl)
----------------------------------------------------------------------
Message: 1
Date: Wed, 04 Jul 2012 03:10:59 +0100
From: "Carlos J. G. Duarte" <carlos.j.g.dua...@gmail.com>
Subject: [Haskell-beginners] What's this [f| data |] ??
To: beginners@haskell.org
Message-ID: <4ff3a633.8020...@gmail.com>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
Hi. I'm trying to get into haskell in my free time. I have already
covered some syntax, but there's plenty to do yet, and when I'm
consulting other people's stuff, I find lots of unknown constructs to
me, which turns harder to lookup for, due to the very "symbolic" nature
of Haskell.
For instance, on this http://www.yesodweb.com/blog/2012/04/yesod-js-todo
they have a few constructs like this:
|mkYesod "App" [parseRoutes|
/HomeR GET
/todoTodosR GET PUT
/todo/#TodoId TodoR GET DELETE
|]|
It seems that the inline text is going to be fed to parseRoutes. How
does that constructs work (links?)? I already know list comprehensions
which appear to be related with this.
Thanks.
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Message: 2
Date: Tue, 3 Jul 2012 22:30:58 -0400
From: Jack Henahan <jhena...@uvm.edu>
Subject: Re: [Haskell-beginners] What's this [f| data |] ??
To: "Carlos J. G. Duarte" <carlos.j.g.dua...@gmail.com>
Cc: beginners@haskell.org
Message-ID: <db99b310-c54e-4362-8d3b-65a7e333e...@uvm.edu>
Content-Type: text/plain; charset="iso-8859-1"
parseRoutes is a quasiquoter [1]. It uses a type-safe metaprogramming language
called Template Haskell [2] to parse a string as a Route (e.g., HomeR is a
Route describing the base resource). You can see the source here [3]. I'm
pretty new with Yesod, myself, so I'm sure someone else will give you a more in
depth description shortly.
[1]: http://www.haskell.org/haskellwiki/Quasiquotation
[2]: http://www.haskell.org/haskellwiki/Template_Haskell
[3]:
http://hackage.haskell.org/packages/archive/yesod-routes/1.0.1.2/doc/html/src/Yesod-Routes-Parse.html#parseRoutes
On Jul 3, 2012, at 10:10 PM, Carlos J. G. Duarte wrote:
> Hi. I'm trying to get into haskell in my free time. I have already covered
> some syntax, but there's plenty to do yet, and when I'm consulting other
> people's stuff, I find lots of unknown constructs to me, which turns harder
> to lookup for, due to the very "symbolic" nature of Haskell.
>
> For instance, on this http://www.yesodweb.com/blog/2012/04/yesod-js-todo they
> have a few constructs like this:
>
> mkYesod "App"
> [parseRoutes|
> /
> HomeR GET
>
> /todo
> TodosR GET PUT
>
> /todo/#
> TodoId TodoR GET DELETE
>
> |]
>
>
> It seems that the inline text is going to be fed to parseRoutes. How does
> that constructs work (links?)? I already know list comprehensions which
> appear to be related with this.
>
> Thanks.
> _______________________________________________
> Beginners mailing list
> Beginners@haskell.org
> http://www.haskell.org/mailman/listinfo/beginners
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------------------------------
Message: 3
Date: Tue, 3 Jul 2012 22:32:28 -0400
From: David McBride <toa...@gmail.com>
Subject: Re: [Haskell-beginners] What's this [f| data |] ??
To: "Carlos J. G. Duarte" <carlos.j.g.dua...@gmail.com>
Cc: beginners@haskell.org
Message-ID:
<CAN+Tr40i2kX371kKcH0Gb30Afw8-fne=4MK+kNy1c7Jj6z+=c...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
This is quasiquoting. It is a pretty advanced topic, but it allows
you to take an arbitrary string and parse it with a quasiquoter of
your choice (in this case, parseRoutes) into some structure or
another. Yesod uses it all over the place to generate html,
javascript, routing tables, and such.
On Tue, Jul 3, 2012 at 10:10 PM, Carlos J. G. Duarte
<carlos.j.g.dua...@gmail.com> wrote:
> Hi. I'm trying to get into haskell in my free time. I have already covered
> some syntax, but there's plenty to do yet, and when I'm consulting other
> people's stuff, I find lots of unknown constructs to me, which turns harder
> to lookup for, due to the very "symbolic" nature of Haskell.
>
> For instance, on this http://www.yesodweb.com/blog/2012/04/yesod-js-todo
> they have a few constructs like this:
>
> mkYesod "App" [parseRoutes|
> / HomeR GET
> /todo TodosR GET PUT
> /todo/#TodoId TodoR GET DELETE
> |]
>
>
> It seems that the inline text is going to be fed to parseRoutes. How does
> that constructs work (links?)? I already know list comprehensions which
> appear to be related with this.
>
> Thanks.
>
> _______________________________________________
> Beginners mailing list
> Beginners@haskell.org
> http://www.haskell.org/mailman/listinfo/beginners
>
------------------------------
Message: 4
Date: Tue, 3 Jul 2012 22:33:04 -0400
From: Brent Yorgey <byor...@seas.upenn.edu>
Subject: Re: [Haskell-beginners] What's this [f| data |] ??
To: beginners@haskell.org
Message-ID: <20120704023304.ga15...@seas.upenn.edu>
Content-Type: text/plain; charset=us-ascii
On Wed, Jul 04, 2012 at 03:10:59AM +0100, Carlos J. G. Duarte wrote:
> Hi. I'm trying to get into haskell in my free time. I have already
> covered some syntax, but there's plenty to do yet, and when I'm
> consulting other people's stuff, I find lots of unknown constructs to
> me, which turns harder to lookup for, due to the very "symbolic"
> nature of Haskell.
>
> For instance, on this
> http://www.yesodweb.com/blog/2012/04/yesod-js-todo they have a few
> constructs like this:
>
> |mkYesod "App" [parseRoutes|
> /HomeR GET
> /todoTodosR GET PUT
> /todo/#TodoId TodoR GET DELETE
> |]|
>
>
> It seems that the inline text is going to be fed to parseRoutes. How
> does that constructs work (links?)? I already know list
> comprehensions which appear to be related with this.
It does kind of look like a list comprehension, but it's actually
entirely unrelated -- it's quasiquotation:
http://www.haskell.org/haskellwiki/Quasiquotation
-Brent
------------------------------
Message: 5
Date: Tue, 3 Jul 2012 23:43:48 -0300
From: Felipe Almeida Lessa <felipe.le...@gmail.com>
Subject: Re: [Haskell-beginners] What's this [f| data |] ??
To: "Carlos J. G. Duarte" <carlos.j.g.dua...@gmail.com>
Cc: beginners@haskell.org
Message-ID:
<CANd=OGFou=qa4xe5qjpmkl68bytvu+rdqwv0lhx9q8qv5xx...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
On Tue, Jul 3, 2012 at 11:10 PM, Carlos J. G. Duarte
<carlos.j.g.dua...@gmail.com> wrote:
> For instance, on this http://www.yesodweb.com/blog/2012/04/yesod-js-todo
> they have a few constructs like this:
>
> mkYesod "App" [parseRoutes|
> / HomeR GET
> /todo TodosR GET PUT
> /todo/#TodoId TodoR GET DELETE
> |]
>
> It seems that the inline text is going to be fed to parseRoutes. How does
> that constructs work (links?)? I already know list comprehensions which
> appear to be related with this.
That's a Template Haskell (TH) quasi-quotation. The 'parseRoutes'
function is the quasi-quoter. Check [1] and [2] for starters =).
Also, don't be afraid to ask questions on the Yesod mailing list (of
which I'm a subscriber, too).
[1] http://www.haskell.org/haskellwiki/Quasiquotation
[2]
http://www.haskell.org/ghc/docs/latest/html/users_guide/template-haskell.html#th-quasiquotation
Cheers,
--
Felipe.
------------------------------
Message: 6
Date: Tue, 3 Jul 2012 23:55:36 -0300
From: Felipe Almeida Lessa <felipe.le...@gmail.com>
Subject: Re: [Haskell-beginners] What's this [f| data |] ??
Cc: beginners@haskell.org
Message-ID:
<CANd=ogexcyirplo1nvg1sepuana5j-ejp4pusd43mbwbk6m...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Four answers! Sorry, but according to Gmail I won by 10 minutes =P.
Cheers, =)
--
Felipe.
------------------------------
Message: 7
Date: Wed, 04 Jul 2012 11:56:36 +0200
From: "Henk-Jan van Tuyl" <hjgt...@chello.nl>
Subject: Re: [Haskell-beginners] Using tls-extra for simple smtp
To: beginners@haskell.org, "Sarfraz K." <dragoon.emp...@yahoo.fr>
Message-ID: <op.wgw1wnbgpz0...@zen5.arnhem.chello.nl>
Content-Type: text/plain; charset=iso-8859-15; format=flowed;
delsp=yes
On Tue, 03 Jul 2012 17:16:37 +0200, Sarfraz K. <dragoon.emp...@yahoo.fr>
wrote:
> I am trying to write a simple script to send a mail via my gmail account.
:
> test1 = do h <- connectTo server (PortNumber (fromIntegral port))
> hSetBuffering h NoBuffering
> write h "EHLO"
> write h "STATTLS"
> listen h
I am not an expert in this matter, but I think you must change the line
> write h "STATTLS"
to:
> write h "STARTTLS"
Regards,
Henk-Jan van Tuyl
--
http://Van.Tuyl.eu/
http://members.chello.nl/hjgtuyl/tourdemonad.html
Haskell programming
--
------------------------------
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