Hadley Style linters

[jimhester]

All from http://r-pkgs.had.co.nz/style.html Most should be pretty straight forward, some are a little tricky.

• line length (80 120? + characters)
• variable names
  • no camelCase
  • no multiple dots
  • very long variable names?
• Spacing
  • infix operators have spaces around them
  • commas space after, none before
  • space before left parentheses
  • no spaces inside parentheses or square brackets
• Curly braces
  • Open never on own line
  • Open always followed by a new line
  • Closing always on new line, unless an else
  • Code inside curly braces should be indented appropriately
• no tab characters
• Functions
  • verbs where possible
  • return() only for early returns (never at the end of a function)
• Comments
  • should be a # followed by a space, or roxygen #'
• only double quotes
• <- not = for assignment