Difference between revisions of "Talk:GHC.Generics"
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(typo?) |
m |
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| Line 2: | Line 2: | ||
| − | Is that a typo (copied from http://www.haskell.org/ghc/docs/7.4.1/html/users_guide/generic-programming.html, or is there a reason for the difference? |
+ | Is that a typo (copied from http://www.haskell.org/ghc/docs/7.4.1/html/users_guide/generic-programming.html), or is there a reason for the difference? |
-- | Sums: encode choice between constructors |
-- | Sums: encode choice between constructors |
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Revision as of 04:00, 3 March 2012
Why does the definition of (:+:) use the pipe character "|", but the definition of (:*:) uses the ":*:" operator?
Is that a typo (copied from http://www.haskell.org/ghc/docs/7.4.1/html/users_guide/generic-programming.html), or is there a reason for the difference?
-- | Sums: encode choice between constructors infixr 5 :+: data (:+:) f g p = L1 (f p) | R1 (g p)
-- | Products: encode multiple arguments to constructors infixr 6 :*: data (:*:) f g p = f p :*: g p