[Haskell-beginners] Type inference or just ... a typo in a paper?

[Michael Turner]

I've inherited some Haskell code, which you can find here:

http://web.cecs.pdx.edu/~mpj/pubs/aug.html

The text of the accompanying paper says, "we extend the Text class..."
-- but the identifier "Text" appears nowhere in the code. Is this just
an error in the paper, or is the Text class getting involved in some
indirect way, e.g. through String or perhaps because of the line
"instance Show Tree where . . ."?


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Michael Turner
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