Send Beginners mailing list submissions to
[email protected]
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
[email protected]
You can reach the person managing the list at
[email protected]
When replying, please edit your Subject line so it is more specific
than "Re: Contents of Beginners digest..."
Today's Topics:
1. Re: Easy to use XML parser (Tony Morris)
2. Re: Why do i need to take out the list for this to work
(Kim-Ee Yeoh)
----------------------------------------------------------------------
Message: 1
Date: Wed, 17 Jun 2020 22:29:05 +1000
From: Tony Morris <[email protected]>
To: [email protected]
Subject: Re: [Haskell-beginners] Easy to use XML parser
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
hackage.haskell.org/package/tagsoup
hackage.haskell.org/package/tagsoup-navigate
hackage.haskell.org/package/sv
On 6/17/20 8:13 PM, Alexander Chen wrote:
> Hi,
>
> For eductional/testing purposes I am looking for an .xml parser which
> can output strictly .csv. The pipeline goes from .xml -> *.csv -> SQL
> table. *The fat ones are already written in another language.
>
> Can you recommend a parser that can achieve this, has understandable
> documentation and is easy to use?
>
> thanks in advance.
>
> p.s. It would be great if you have personal experience with the library.
>
> best,
>
>
>
>
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: OpenPGP digital signature
URL:
<http://mail.haskell.org/pipermail/beginners/attachments/20200617/14623dec/attachment-0001.sig>
------------------------------
Message: 2
Date: Thu, 18 Jun 2020 02:48:10 +0700
From: Kim-Ee Yeoh <[email protected]>
To: Alexander Chen <[email protected]>, The Haskell-Beginners
Mailing List - Discussion of primarily beginner-level topics related
to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] Why do i need to take out the list
for this to work
Message-ID:
<CAPY+ZdRmQF+u86F_KWG0tEiH13LK=zg1zd0feah30ig51vf...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
On Thu, Jun 11, 2020 at 1:42 AM Alexander Chen <[email protected]> wrote:
> hi,
>
> assigment: make your own element function with the any function.
>
> --elem with any
> myElemAny :: Eq a => a -> [a] -> Bool
> myElemAny a = any (== a)
>
> --elem with any
> myElemAny' :: Eq a => a -> [a] -> Bool
> myElemAny' a [x]= any (== a) [x]
>
>
>From a beginners perspective, the second function looks perfectly
cromulent. After all, how should one indicate a list if not by enclosing it
with square brackets like this, [x]?
An x might or might not be a list, but [x] surely has to be one, yes?
But consider all the things that could be a list. Specifically, look at the
following:
1. An empty list—which haskell denotes using []—is a list
2. [1,2,3] is a list
3. [1,1,1,…] is a list
In each of the cases above, what is the value of x in [x]?
Recall that haskell is a value-oriented language. Every identifier at the
term-level evaluates to something that has a well-defined type.
> myElemAny' compiles but throws an error because it has a non-exhaustive
> pattern. Could somebody tell me why the list gives the function grieveness?
>
> thanks,
>
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
--
-- Kim-Ee
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://mail.haskell.org/pipermail/beginners/attachments/20200618/5449afed/attachment-0001.html>
------------------------------
Subject: Digest Footer
_______________________________________________
Beginners mailing list
[email protected]
http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
------------------------------
End of Beginners Digest, Vol 144, Issue 4
*****************************************
