[Haskell-beginners] Type constructors sharing a common field
lortabac at gmx.com
Tue Apr 29 00:32:38 UTC 2014
If you could have a single polymorphic "age" function for all types
having an age, you could never have this runtime error, because the
compiler would infer which "age" we are referring to.
The GHC OverloadedRecordFields extension that Michael linked seems to do
what I am looking for (http://www.well-typed.com/blog/84/).
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