Records in Haskell

Barney Hilken b.hilken at
Fri Sep 16 13:47:25 CEST 2011

I have added my proposal to the wiki.The only downsides to it that I can see are:

1. If the types can be resolved at compile time, the compiler needs to optimise away the dictionaries, otherwise there will be a performance cost. Since this is always the case for type classes, I assume this is a well-studied problem.

2. The olegites are going to use the Label mechanism for other things, and ask for extra features. What features would be worth implementing? Do we want a member function to return the name as a string? How about a lexicographic ordering type function so we can implement extensible records? Where do we stop?


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