17 lines
302 B
Markdown
17 lines
302 B
Markdown
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Haskell Kinds
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-------------
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In Haskell some types can take type variable(s).
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Typically: `[a]`.
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Types have _kinds_;
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The kind is to type what type is to function.
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Kind are the types for types (so meta).
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~~~
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Int, Char :: *
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[], Maybe :: * -> *
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(,) :: * -> * -> *
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[Int], Maybe Char, Maybe [Int] :: *
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~~~
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