Ruby Heredoc Syntax for String Literals

heredoc.rb

# The one you want is

def method
  string = <<~END
  
    This format allows you to indent the contents of the string without including the indent in the value.
    String interpolation works here.

  END

  string2 = <<~'END'
  
    The single quotes around END prevent string interpolation here. It's also good for \_ ascii art _/ .

  END
end