Talk:Compose

Reading this page got me to write an arrow version of compose. Don't know if it should be included or not since it isn't a monadic solution.

composeArrow :: [a -> a] -> a -> a <br/>
composeArrow = foldr ((>>>) . arr) (arr id)

Or maybe this:

composeArrow :: [a -> a] -> a -> a
composeArrow = foldl ((>>>) . arr) returnA

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The first version does not need the function composition, because the functions could be applied immediately. This leads to

compose = flip (foldl (flip id))

Shall I replace the first solution?

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I would write:

compose = foldr (flip (.)) id