gistfile1.rb

# Original
(self.index('"') == 2 || self.index("'") == 2) ? true : false

# First iteration
[self.index('"'),self.index("'")].include? 2 ? true : false

# Second iteration
[self.index('"'),self.index("'")].include? 2  # de por sí ya eso retorna true o false 

# Third iteration, self isn't needed
[index('"'),index("'")].include? 2

def third_char_symbol?
  [index('"'), index("'")].include? 2
end

puts "Hey!" if third_char_symbol?