fonzerelly/RealWorldHaskell_Workthrough — pull request #1 by stefanholzmueller (2014-09-12 19:02:53+00:00)
Title: generalized 'firstChars', and some refactoring towards point-free style

generalized firstChars:
`firstChars :: [String] -> [Maybe Char]`

use firstCharsOrElse instead of firstChars which takes a replacement character

some other refactorings for more concise code with point-free function composition