is there a shortcut for `class isogram def self.isogram? #code here end end in ruby

Yes, there is a shortcut for defining a class with a single method in Ruby. Instead of using the class and end keywords, you can use the following syntax:

main.rb
class << self
  def isogram?
    # code here
  end
end
55 chars
6 lines

This syntax is called "singleton class syntax" and it allows you to define methods directly on the class object itself, without creating an instance of the class. In this case, we are defining the isogram? method as a class method (using self) within the singleton class.