Issue #21555 has been updated by matz (Yukihiro Matsumoto). Status changed from Open to Rejected I still ask you to define `def valid? = @valid` manually. It is not much worse than `attr_reader :valid?`. Matz. ---------------------------------------- Feature #21555: Add support for predicate attribute reader names https://bugs.ruby-lang.org/issues/21555#change-114545 * Author: shan (Shannon Skipper) * Status: Rejected ---------------------------------------- After manually aliasing predicate methods many times, I wanted to propose letting `attr_reader` take predicate method names that correspond to instance variables of the base name without a trailing question mark. https://github.com/ruby/ruby/pull/14391 If the base name method doesn't already exist, a predicate name defines a base name method attribute reader to alias then undefines the base name. For example, this creates an `enabled?` method that reads `@enabled`: ```ruby attr_reader :enabled? ``` This feature is only supported for `attr_reader` and `attr`, not `attr_writer` or `attr_accessor`, since setter methods cannot have question marks. Example: ```ruby class Example attr_reader :valid?, :meaning def initialize @valid = [true, false].sample @meaning = 42 end end Example.new.valid? #=> true ``` -- https://bugs.ruby-lang.org/