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Ruby Ruby Basics (Retired) Ruby Methods Methods in Ruby

It never said in the video that ?'s could be in the name of a method. It stated that lowercase, _ , and ! was allowed.

Am I missing something?

1 Answer

I don't know if you're mistaken or not regarding the video contents, but question marks are very much approved of in Ruby.

However, the convention is that methods that have question marks must only return false or true, never anything else; they are therefore termed 'Boolean Methods' i.e. "Methods with question marks should only ever be Boolean Methods."

For example:

def tall?(person)
  person.height > 180
end

andrew = Person.new(height: 170)
tall?(andrew)

=> false