How to avoid if/else branch condition in Ruby. By Yehuda Katz https://yehudakatz.com/2009/10/04/emulating-smalltalks-conditionals-in-ruby/. Please don't do it in production code or your gems.

smalltalk_inspired_if_else_averse_in_ruby.rb

class Object
  def if_true
    yield
    self
  end
  
  def if_false
    self
  end
end

class NilClass
  def if_true
    self
  end
  
  def if_false
    yeild
    self
  end
end

class FalseClass
  def if_true
    self
  end
  
  def if_false
    yeild
    self
  end
end

# Then it make possible

something.if_true {
  # The "true" case
}.if_false {
  # The "false" case
}