2017-09-12

• Memorize how to write a basic main method:

    main = do putStrLn "Loaded"
  

• Use “–” (two dashes) to comment to the end of the line. This is equivalent to Racket “;” (semicolon).

• Function name rules:

  • Must begin with lowercase letter.

  • Hyphens (-) are not allowed in names.

  • Underscore (_) may be used instead.

  • Traditionally camelCase is used for functions. (First letter lowercase, then uppercase each new word.)

• We will learn about the $ sign soon, but it is a substitute for putting parentheses from somewhere to the end of the line. That means

      putStrLn ( show ( grapher f 0 10 ) )
  

  could be written as

      putStrLn $ show $ grapher f 0 10