Data representation, maybe reflection, laziness
Frank Atanassow
franka at cs.uu.nl
Tue Nov 4 13:45:18 EST 2003
On dinsdag, nov 4, 2003, at 00:39 Europe/Amsterdam, Frank Atanassow
wrote:
> For example, our translator takes the Schema type doc (representing a
> bibliographic entry) ... to a certain ugly datatype X.
Oops. For "X" I should have written E_doc, that is, the translation of
Schema type "doc" is named "E_doc" ("E" is for Element); it's used in
the example at the end.
< main = interact work
< toE_doc = unparse{|E_doc|} . expand{|E_doc|} . reduce{|Doc|}
< toDoc = expand{|Doc|} . reduce{|E_doc|} . parse{|E_doc|}
< work = toE_doc . (\d -> d { authors = filter (/= "Dubya") (authors
d) }) . toDoc
Regards,
Frank
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