Naming

Naming

• Use snake_case for methods and variables.
  [link]

• Use CamelCase for classes and modules. (Keep
  acronyms like HTTP, RFC, XML uppercase.)
  [link]

• Use SCREAMING_SNAKE_CASE for other
  constants.[link]

• The names of predicate methods (methods
  that return a boolean value) should end in a question mark.
  (i.e. Array#empty?).[link]

• The names of potentially “dangerous” methods
  (i.e. methods that modify self or the arguments, exit!, etc.) should
  end with an exclamation mark. Bang methods should only exist if a non-bang
  method exists. ([More on this][ruby-naming-bang].)
  [link]

• Name throwaway variables _.
  [link]

  version = '3.2.1'
  major_version, minor_version, _ = version.split('.')