Multi-parameter type class
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[[Category:Language extensions]] | [[Category:Language extensions]] | ||
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== About == | == About == | ||
| - | Basically, type classes which can take multiple arguments, such as: | + | Basically, [[type class|type classes]] which can take multiple arguments, such as: |
<hask> | <hask> | ||
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</hask> | </hask> | ||
| - | Without [[ | + | Without [[functional dependencies]] or [[associated types]], these multi-parameter type classes may cause too much ambiguity to pass the type-checker. |
== Also see == | == Also see == | ||
[http://hackage.haskell.org/trac/haskell-prime/wiki/MultiParamTypeClasses The Haskell' page] | [http://hackage.haskell.org/trac/haskell-prime/wiki/MultiParamTypeClasses The Haskell' page] | ||
Revision as of 14:42, 11 August 2008
1 About
Basically, type classes which can take multiple arguments, such as:
class Foo a b
Without functional dependencies or associated types, these multi-parameter type classes may cause too much ambiguity to pass the type-checker.
