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  1. decart2 po pre = map ((pre++) . (:[])) po
  2. decart l = foldl (\pre po -> concat $ map (decart2 po) pre) [[]] l
  3. main = print $ decart [["palto", "noski", "shapki"], ["red", "black", "white"]]
Success #stdin #stdout 0s 5732KB
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stdin 
Standard input is empty
stdout 
[["palto","red"],["palto","black"],["palto","white"],["noski","red"],["noski","black"],["noski","white"],["shapki","red"],["shapki","black"],["shapki","white"]]
https://ideone.com/3Okmm6
language:
Haskell (ghc 8.4.4)
created:
13 years ago
visibility:
public

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