StackOverflow2013

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plurals

PO
primarykey
Id
14379765
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2013-01-17T13:04:15.003
FavoriteCount
0
LastActivityDate
2015-04-07T19:42:03.143
LastEditDate
2015-04-07T19:42:03.143
LastEditorUserId
15770
OwnerUserId
663299
ParentId
14338628
PostTypeId
2
Score
1
ViewCount
0
LastEditorDisplayName
text
Body
Based on the ensuing discussion, it sounds like what you want is to create a DSL (Domain-Specific Language) to represent XML. One option is to embed your DSL in Haskell so it can appear in Haskell source code. In general, you can do this by defining the types you need, and providing a set of functions to work with those types. It sounds like this is what you're hoping to do. However, as an embedded DSL, it will be subject to some constraints, and this is the problem you're encountering. Perhaps there is a clever trick to do what you want, maybe something involving type functions, but I can't think of anything at present. If you want to keep trying, maybe add the tags <code>dsl</code> and <code>gadt</code> to your question, catch the attention of people who know more about this stuff than I do. Alternatively, you might be able to use something like <a href="http://www.haskell.org/haskellwiki/Template_Haskell" rel="nofollow" title="Template Haskell">Template Haskell</a> or <a href="http://www.haskell.org/haskellwiki/Scrap_your_boilerplate" rel="nofollow" title="Scrap_your_boilerplate">Scrap Your Boilerplate</a> to allow your users to omit some information, which would them be "filled in" before Haskell "sees" it. Another option is to have an external DSL, which you parse using Haskell. You could define a DSL, but maybe it would be easier to just use XML directly with a suitable DTD. There are Haskell libraries for parsing XML, of course.
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1. POHow do I restrict the types in a heterogenous list?
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1. USakaihola
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1. USmhwombat
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1. POHow do I restrict the types in a heterogenous list?
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1. COThanks ... even though it is no solution this helps ... and until someone gives a better answer i'll accept it.
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