On 4/27/07, Ruby Quiz <james / grayproductions.net> wrote:
>
> This week's Ruby Quiz is to write a program that accepts a credit card number as
> a command-line argument.  The program should print the card's type (or Unknown)
> as well a Valid/Invalid indication of whether or not the card passes the Luhn
> algorithm.
>
>

This Ruby Quiz has been translated into Japanese.
Maybe there will be more people participating.

http://d.hatena.ne.jp/nappa_zzz/20070429

Harry

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