[GHC] #13145: Documentation shouldn't call things functions that aren't functions

[GHC]

#13145: Documentation shouldn't call things functions that aren't functions
-------------------------------------+-------------------------------------
           Reporter:  chris-martin   |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:                 |           Version:  8.0.1
  libraries/base                     |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Documentation
  Unknown/Multiple                   |  bug
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 For example, in the
 [Prelude](https://hackage.haskell.org/package/base-4.9.0.0/docs/Prelude.html)
 docs we have a section called "Input functions" in which only one of the
 four values is a function:

 {{{
 getChar :: IO Char
 getLine :: IO String
 getContents :: IO String
 interact :: (String -> String) -> IO ()
 }}}

 Referring to non-function values (particularly of type `IO`) as
 "functions" is often a sign that beginners haven't fully grasped some
 concepts about purity, so I think it's important to clean up our own
 language.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13145>
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