Sierpinski triangle: Difference between revisions
Content added Content deleted
m (→{{header|Haskell}}: Tidied with Ormolu, preferred <> to ++) |
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rule90 = scanl next "*" . enumFromTo 1 . subtract 1 |
rule90 = scanl next "*" . enumFromTo 1 . subtract 1 |
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where |
where |
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next = |
next = |
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const |
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. ( (zipWith xor . (' ' :)) |
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<*> (<> " ") |
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) |
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xor l r |
xor l r |
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| l == r = ' ' |
| l == r = ' ' |
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| otherwise = '*' |
| otherwise = '*' |
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spacing x (s, w) = |
spacing x (s, w) = |
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( concat |
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[w, intersperse ' ' x, "\n", s], |
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w <> " " |
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) |
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main :: IO () |
main :: IO () |
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