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Added some information about function composition (#28102)

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Sufiyan Samnani 2019-05-21 23:47:24 -06:00 committed by Christopher McCormack
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guide/english/haskell/hello-world/index.md
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@ -22,3 +22,4 @@ main :: IO ()
main = printer hello
```
> Function compositions are a better way to write multiple nested functions in Haskell. In the above example, putStrLn.show is equivalent to (putStrLn (show)).