Issue #21556 has been updated by nobu (Nobuyoshi Nakada). Phalado (Raphael Cordeiro) wrote in #note-5:
I also think this is something very 'Ruby' to do, like the method `.zero?` just to check if a value is equal to zero.
Only `Numeric` classes have the method `zero?`, but not `NilClass`, `TrueClass`, `FalseClass`, and `String`. ---------------------------------------- Feature #21556: Add true? and false? methods to NilClass, TrueClass, FalseClass, and String https://bugs.ruby-lang.org/issues/21556#change-114578 * Author: Phalado (Raphael Cordeiro) * Status: Feedback ---------------------------------------- Sometimes we need to check for an exact `true` or `false` value. This can be a string or a boolean value. Usually, what I do to solve this is something like `value.to_s == true`, this way covering for strings, booleans, and nil values. The idea of these new methods is to check for the exact value, being it a String, a Boolean, or even a Nil value. This is the result obtained: ``` ruby # String 'true'.true? # true 'false'.true? # false ''.true? # false 'true'.false? # false 'false'.false? # true ''.false? # false # Boolean true.true? # true true.false? # false false.true? # false false.false? # true # Nil nil.true? # false nil.false? # false ``` -- https://bugs.ruby-lang.org/