Return optional argument

gistfile1.rb

# those are two implementations of the same thing, there might be more ways to do it
# I'm trying to decide which one would be best practice


# obviously those won't be nil in a real application
val1 = nil
opt1 = nil

def optional_argument1
  [val1, opt1]
end

def optional_argument2(include_optional? = false)
  if include_optional?
    [val1, opt1]
  else
    val1
  end
end

def usage_without_optional1
  needed_value = optional_argument1[0]
  # use needed_value somehow
end

def usage_with_optional1
  [needed_value1, needed_value2] = optional_argument1
  # use needed_values 1 and 2 somehow
end

def usage_without_optional2
  needed_value = optional_argument2
  # use needed_value1
end

def usage_with_optional2
  [needed_value1, needed_value2] = optional_argument2(include_optional? = true)
  # use needed_values 1 and 2 somehow
end