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I have just been reading a chapter on how to implement tail-recursiveness
in Lisp, and it seems simple enough. Why does not Ruby do it?

Thanks,

-Laza
http://lazax.com/blog

Hi,

In message "Why is Ruby NOT tail recursive?"
on 04/03/01, Laza <> writes:

|I have just been reading a chapter on how to implement tail-recursiveness
|in Lisp, and it seems simple enough. Why does not Ruby do it?

Just because it was too hard to implement tail recursion with the
current interpreter.

matz.

On Mon, 1 Mar 2004, Laza wrote:

> I have just been reading a chapter on how to implement tail-recursiveness
> in Lisp, and it seems simple enough. Why does not Ruby do it?

It would be a nice to have, but on the other hand, converting a tail
recursive call to a while loop is usually a very easy refactoring to make
by hand.


John Carter Phone : (64)(3) 358 6639
Tait Electronics Fax : (64)(3) 359 4632
PO Box 1645 Christchurch Email :
New Zealand

The universe is absolutely plastered with the dashed lines exactly one
space long.

John Carter wrote:

> On Mon, 1 Mar 2004, Laza wrote:
>
>
>>I have just been reading a chapter on how to implement tail-recursiveness
>>in Lisp, and it seems simple enough. Why does not Ruby do it?
>
>
> It would be a nice to have, but on the other hand, converting a tail
> recursive call to a while loop is usually a very easy refactoring to make
> by hand.

That question might be a candidate for the FAQ, wouldn't it?
The answer is here:
http://blade.nagaokaut.ac.jp/cgi-bin...uby-talk/94033

Happy rubying

Stephan