Impressed

[Alex Rønne Petersen]

On 28-07-2012 09:36, Stuart wrote:
> On Friday, 27 July 2012 at 21:59:33 UTC, Paulo Pinto wrote:
>> On Friday, 27 July 2012 at 19:14:29 UTC, Stuart wrote:
>>> On Friday, 27 July 2012 at 19:09:27 UTC, Paulo Pinto wrote:
>>>> On Friday, 27 July 2012 at 19:04:07 UTC, Stuart wrote:
>>>>>
>>>>> Recursion isn't just a security risk - it's a performance hit as well.
>>>>
>>>> Only in languages without tail call optimizations.
>>>
>>> Which is pretty much all of them.
>>>
>>> Scheme does it, and probably HOPE too; but bugger-all you could write
>>> a real program in, like .NET or C++. I mean, we're in bloody FORTRAN
>>> territory here. What use is that for writing Windows applications?
>>>
>>> Does D have tail call optimisation?
>>
>>
>> Well, at least all of these:
>>
>> - Scheme
>> - Haskell
>> - OCaml
>> - F#
>> - Erlang
>> - Clojure
>> - Some C and C++ compilers (gcc, Intel, MSVC in release mode)
>> - Most commercial Lisp compilers
>
> So, as I said, nothing you can write a real program in - except possibly
> for F#. The possibility of "some" C compilers supporting it doesn't mean
> you can rely on the feature being present.

Are you serious........?

>
>> Yes D compilers also do tail call optimizations in certain cases, even
>> if not specified in the language spec
>
> If it's not specified in the language spec - and if it's only "in
> certain cases" - how can you rely on it?
>

You can't.

-- 
Alex Rønne Petersen
alex at lycus.org
http://lycus.org