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List rooted trees: Difference between revisions

List rooted trees (view source)

Revision as of 18:40, 13 March 2020

95 bytes removed ,  4 years ago
m
→‎{{header|Haskell}}: (used foldTree)
m (→‎{{header|Haskell}}: (used foldTree))
Line 429:
 
bracketsFromTree :: Tree a -> String
bracketsFromTree = foldNestfoldTree (\_ xs -> '(' : (concat xs ++ ")"))
 
foldNest :: ([b] -> b) -> Tree a -> b
foldNest f =
let go (Node _ ts) = f (map go ts)
in go
 
main :: IO ()
Hout
9,659

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