On Apr 3, 2009, at 10:24 AM, John Cowan wrote:

>
> On Fri, Apr 3, 2009 at 9:31 AM, Chas Emerick <cemer...@snowtide.com>  
> wrote:
>
>> There's no doubt that in every application-oriented context I've  
>> seen,
>> you can get the job done given the tools that scala and clojure
>> provide, absent contrived examples.
>
> Languages with proper tail-calling are a different paradigm from those
> that don't provide it, or do so only as an optimization (like gcc).
> If we don't have tail-calls in our repository of techniques, we simply
> don't *see* the opportunities to use them, like patients with damage
> to the visual cortext, who don't complain of being blind because they
> have lost the very concept of seeing.  It's surprising that so modest
> a change can work such a vast transformation in thinking, but it does,
> just like the difference between having only subroutines and having
> coroutines as well.

I agree completely.  My only point was that many, many tasks have no  
reason to use techniques that require anything more than locally- 
recursive fns.  Of course, YMMV depending on your context and  
specialization.

- Chas

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