It's function composition.
(.) :: (b -> c) -> (a -> b) -> (a -> c)
E.G. putStrLn . show $ 42
-R. Kyle Murphy
Sent from my phone.
Hello. I saw the dot "." operator in some Haskell codes, but I couldn't figure out what it does. I didn't see it in some books and tutorials and couldn't find an explanation on the Internet. Could you tell me what it does?Thanks:)
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