content: -- Welcome to Leksah.  This is a quick sample package for you to
  -- try things out with.  We hope it will be useful for those new
  -- to Haskell or just new to Leksah.
  
  -- If you are new to haskell then here are some great sites to visit
  -- http://learnyouahaskell.com/
  -- http://tryhaskell.org/
  -- http://book.realworldhaskell.org/
  
  -- To build this package use
  --   * Just make a change while background build is activated
  --   * Ctrl+B (OS X Command+B)
  --   * Package -> Build
  
  -- When you are ready to create your own workspace and package.
  --   * File -> New -> Package
  
  -- Next we are importing some things from other modules.
  -- Leksah can normally add these imports for you, just
  -- press Ctrl+R (OS X Command+R)
  
  import Data.Monoid ((<>))
  
  -- This strange looking comment adds code only needed when running the
  -- doctest tests embedded in the comments
  -- $setup
  -- >>> import Data.List (stripPrefix)
  
  -- | Simple function to create a hello message.
  --
  -- The following tells doctest & QuickCheck that if you strip "Hello "
  -- from the start of `hello s` you will be left with `s` (for any `s`).
  -- QuickCheck will create the test data needed to run this test.
  --
  -- To automatically run the tests when the package is built, click on
  -- the green tick on the tool leksah tool bar.
  --
  -- To see how this is configured take a look in leksah-welecome.cabal
  -- (you can open it with Package -> Edit).
  --
  -- The code that runs the tests is in the file test/Main.hs.
  --
  -- prop> stripPrefix "Hello " (hello s) == Just s
  hello :: String -> String
  hello s = "Hello " <> s
  
  -- | Executable Entry Point
  --
  -- Here is the entry point for the leksah-welcome executable
  --
  -- To run it
  --   * Select Leksah menu item Package -> Run (or the cogs on the toolbar)
  --   * Select `main` and press Ctrl+Enter to run them in ghci
  --   * Run "leksah-wellcome" from the command line
  main :: IO ()
  main = putStrLn (hello "World!")
  
  