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Re: "null", polymorphism and TCO

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  Re: "null", polymorphism and TCO Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-02-08 15:03 -0500

#31088 — Re: "null", polymorphism and TCO

On 2/8/2015 1:16 PM, Stefan Ram wrote:
>    A book said that one needed null to mark the end of a linked
>    list:
> [...]
>    Neither null nor java.util.Optional is needed when one
>    is using polymorphism, i.e., real OOP. We just need to say
>    that an entry with a next entry is a different type than
>    an entry without a next entry. No »null«, no »Optional«,
>    just polymorphism!
> [...]

     When I was a young lad and learning my first programming
language (FORTRAN II; "young" was long ago for me), I figured
out how to write a counted loop using a "computed GOTO" instead
of a "DO".  Thus I proved my own great cleverness.

     ISTM your idea is similarly clever -- and similarly useless.

-- 
esosman@comcast-dot-net.invalid
"Don't be afraid of work. Make work afraid of you." -- TLM

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