John Ky newho...@gmail.com writes:
Hi,
Possibly a silly question but is it possible to have a function that has a
different return type based on it's first argument?
Are you sure that's what you really want?
For instance
data Person = Person { name :: String, ... }
data Business =
John Ky newho...@gmail.com wrote in article
bd4fcb030901181744i2b26172bv2328974ff911f...@mail.gmail.com in
gmane.comp.lang.haskell.cafe:
data Person = Person { name :: String, ... }
data Business = Business { business_number :: Int, ...}
key person = name person
key business =
