[Haskell-cafe] Article review: Category Theory

Yitzchak Gale gale at sefer.org
Wed Jan 17 14:02:43 EST 2007

David House wrote:
> I've added a bit more explanation, so it may now be palatable. It is
> quite a hard exercise, though, perhaps it shouldn't come so early on.

In my opinion, it is now much more clear. And it is a very
instructive example.

If people still find it too hard, you could add the additional
hint: Keep in mind that there are no morphisms
other than the ones shown in the diagram.


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