19 wiersze
553 B
TeX
19 wiersze
553 B
TeX
Let's check on a few very common list operations:
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\begin{haskellcode}
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> [1, 2] ++ [4, 5] -- append two lists
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> head [1, 2, 3] -- first element
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> tail [1, 2, 3] -- everything after the head
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> reverse [1, 2, 3] -- reverse a list
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> take 2 [1, 2, 3] -- take the first two elements
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> drop 2 [1, 2, 3] -- drop the first two elements
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> sum [1, 2, 3]
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> elem 7 [1, 2, 3] -- is there a 7 in the list?
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\end{haskellcode}
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\pause
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A String in haskell is just a list of Chars!
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\begin{haskellcode}
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> ['a', 'b', 'c']
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> 'a' : []
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> head "abc"
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> 'a' ++ 'c'
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\end{haskellcode} |