ruby

Ruby

Sample

• Avoid multiple assignments per line (one, two = 1, 2).
• Avoid organizational comments (# Validations).
• Avoid ternary operators (boolean ? true : false). Use multi-line if instead to emphasize code branches.
• Don't use explicit return except in guard clauses.
• Avoid using semicolons.
• Avoid bang (!) method names. Prefer descriptive names.
• Don't use self explicitly anywhere except class methods (def self.method) and assignments (self.attribute =).
• Prefer nested class and module definitions over the shorthand version Example
• Prefer detect over find.
• Prefer select over find_all.
• Prefer map over collect.
• Prefer reduce over inject.
• Prefer double quotes for strings.
• Prefer && and || over and and or.
• Prefer ! over not.
• Prefer &:method_name to { |item| item.method_name } for simple method calls.
• Prefer if over unless.
• Use _ for unused block parameters.
• Prefix unused variables or parameters with underscore (_).
• Use a leading underscore when defining instance variables for memoization.
• Use %{} for single-line strings needing interpolation and double-quotes.
• Use {...} for single-line blocks. Use do..end for multi-line blocks.
• Use ? suffix for predicate methods.
• Use CamelCase for classes and modules, snake_case for variables and methods, SCREAMING_SNAKE_CASE for constants.
• Use def self.method, not def Class.method or class << self.
• Use def with parentheses when there are arguments.
• Don't use spaces after required keyword arguments. Example
• Use each, not for, for iteration.
• Use a trailing comma after each item in a multi-line list, including the last item. Example
• Use heredocs for multi-line strings.
• Prefer private over protected for non-public attr_readers, attr_writers, and attr_accessors.
• Order class methods above instance methods.
• Prefer method invocation over instance variables.