Joost Behrends wrote:
We read
data Pair a b = Pair a b
in YetAnotherHaskellTutorial. And that is all ! If we omit "data" here, this
would be a silly pleonasm. And no single word about this strange behavior of
"data" in every tutorial i read.
When learning a language, I find it useful to consult grammar to find out
the relevant part of the syntax; then I can check the Haskell online
report for explanations.
For example you presented: ... searching for data in
http://www.hck.sk/users/peter/HaskellEx.htm
... gives you
http://www.hck.sk/users/peter/HaskellEx.htm#topdecl
... and from there you can quickly find relevant part of Haskel report:
http://www.haskell.org/onlinereport/decls.html#sect4.2.1
Haskell has a nice html specification online (thanks for it!).
Peter.
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