TypeError: superclass mismatch for class Word in Ruby

Question

I am creating a Word class and I am getting an error:

TypeError: superclass mismatch for class Word

Here is the

Answer 1

An easy way to bypass this issue is to encapsulate both classes between different modules:

> module M
>     class Word
>         def palindrome?(string)
>             string == string.reverse
>         end
>     end
> end
=> nil
> w = M::Word.new
=> #
> w.palindrome?("foobar")
=> false
> w.palindrome?("level")
=> true
> module N
>     class Word < String
>         def palindrome?
>             self == self.reverse
>         end
>     end
> end
> N::Word.new("kayak").palindrome?
=> true