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]

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