Defining your own Ord for a data type

Posted by mvid on Stack Overflow See other posts from Stack Overflow or by mvid
Published on 2010-06-17T21:56:42Z Indexed on 2010/06/17 22:03 UTC
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data-structures

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haskell

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ordinals

I am attempting to make some data structures to solve a graph puzzle. I am trying to define an edge's comparison criteria, but I am not sure how. So far:

data Edge = Edge (Set String) Bool

How do I tell let the compiler know that I want edges to be declared equal if they have identical sets of strings, and not have equality have anything to do with the boolean value?

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