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Can you give me some examples? What do you use Haskell to do? I am also a mathematician so I can handle the jargon.

• Sniffnoy 12y ago
  Mostly not large things. (Or at least, mostly not things that are large in Haskell.) An example recently -- I wanted to consider, let's say you have two finite rooted trees, S and T, with T having more vertices; and you you have a bijection f from the set of subtrees of S (subtrees have to have the same root as the original) to the set of subtrees of T, with certain restrictions on it; and then to f you associate a system of linear equations; and if the solution set to this system isn't contained a hyperplane aligned with the axes, then (if there exists an f for which this is true) I'll say "S interferes with T". And then I want to check for various T whether there is any smaller S that interferes with them. Basically without something like Haskell, or at least something like Haskell-or-ML (I didn't need typeclasses and I don't know how much I needed laziness), it seems like that would have been a complete mess. Of course, the above example is perhaps not the best as it meant I had to [either look up a library, or, what I actually did] implement row-reduction in Haskell, obviously not a great language for it! But ultimately it wasn't too terrible. And the rest as I've said would have been terrible in another language.