11 lines
397 B
TeX
11 lines
397 B
TeX
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Defining a pair is easy.
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\begin{haskellcode}
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p :: (Int, Char) -- this is the type
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p = (2, 'y') -- this is how we construct the pair
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-- pattern matching against pairs
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sumPair :: (Int, Int) -> Int
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sumPair (x, y) = x + y
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\end{haskellcode}
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\pause
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Note: we use \code{(x, y)} notation for both the type and the definition! Those are still two different things. We can also have triples, quadruples etc.
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