Why Ruby?

[so]

> Those are the same ways of saying the same thing. You use C to implement  
> Ruby's garbage collector. Why? Because you have to. Why again? Because  
> it's the right tool for the job. In particular, C can do that because it  
> has pointer arithmetic - a freedom discriminated against by the speaker.  
> Consistency FTW I guess :o).

I agree, in your example you are right and the reasons obvious.
My example is (i think) a bit different and the reasons not all obvious  
(to me), which is why i am trying to learn more about it.

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