Symbols as parameters?

Diez B. Roggisch deets at
Thu Jan 21 19:53:01 CET 2010

Am 21.01.10 19:48, schrieb Alf P. Steinbach:
> * Diez B. Roggisch:
>> Am 21.01.10 12:58, schrieb Alf P. Steinbach:
>>> * Stefan Behnel:
>>>> Alf P. Steinbach, 21.01.2010 11:38:
>>>>> * Carl Banks:
>>>>>> On Jan 20, 11:43 pm, Martin Drautzburg <Martin.Drautzb... at>
>>>>> [snip]
>>>>>>> What I am really looking for is a way
>>>>>>> - to be able to call move(up)
>>>>>>> - having the "up" symbol only in the context of the function
>>>>>>> call
>>>>>> Short answer is, you can't do it.
>>>>> On the contrary, it's not difficult to do.
>>>>> I provided an example in my answer to the OP (first reply in the
>>>>> thread).
>>>> Erm, no, you didn't. You showed a) how to pass a string constant into a
>>>> function and b) how to pass a value from a bound variable. None of
>>>> that is
>>>> helpful to the OP's problem.
>>> Perhaps look again at that example. It demonstrates exactly what the OP
>>> asks for.
>> Perhaps look again at the requirements:
>> """
>> - the parameter IS REALLY NOT A STRING, but a direction
>> """
> So?

Oh please. You claim you provided exactly what the OP asked for. But in 
the body of move, all you can do is to compare the direction parameter 
tco "up", not to UP. So no, you provided *something*, but not what the 
OP asked for.


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