[Haskell-cafe] Re: [Haskell] View patterns in GHC: Request
Rene de Visser
Rene_de_Visser at hotmail.com
Mon Jul 23 14:39:10 EDT 2007
>> Simon PJ and I are implementing view patterns, a way of pattern matching
>> against abstract datatypes, in GHC. Our design is described here:
>> If you have any comments or suggestions about this design, we'd love to
>> hear them. You can respond to this list (and we can take it to
>> haskell-cafe if the thread gets long) or, if you prefer, directly to me.
I find the => operator excessive. GHC Haskell seems to be growing too
rapidly syntax wise in my opinion.
The important features of code are correctness, maintainability and
readibility (IMHO), and I think => is working against these.
=> uses up more syntax. Buys very little. Equivalent to "-> Just _ " or "->
Just x " as far as I can see.
I would prefer to type the extra 6 characters rather than having the hidden
It is also one more thing to learn. One more confusing type error when you
mix them up.
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