Pierre Johnson napsal(a)
...snip...
>> you encountered one "unusual" REBOL property - aliases. See
>>
> this:
>
>> alias 'a "aa"
>> a: 4
>> aa ; == 4
>> aa: 5
>> a ; == 5
>>
>
> That is exactly what should happen! (because)
>
> alias 'a "aa"
>
>
>> The same does not hold for any pair of words referring to the
>>
> same value (which we don't call aliases in REBOL)
>
> 1. Who is "we"?
>
REBOL users, I guess. You should probably get used to it as to a REBOL
feature. A word can refer to any value. Two different words can refer to
the same value at one moment and to two distinct values at another
moment. That is not a reason to call the words aliases, unfortunately
(maybe a terminology problem?). See
http://www.rebol.com/docs/words/walias.html .
> 2. How can any pair of words refer to the same definitional
> ("value") and not have the status of "alias"?
>
The fact is, that you can compare two kinds of things in REBOL (as
opposed to other languages):
1) compare the values - two distinct words (variables) can refer to one
REBOL value sometimes:
a: "a string"
b: a
; this shows, that both variables refer to the same REBOL value:
same? a b ; == true
2) compare the variables (notice that words are REBOL values too) - two
variables can be equal. (Note that equal variables aren't able to refer
to distinct values.)
; this shows, that the variables are distinct:
equal? 'a 'b ; == false
...snip...
> Two words are aliases if and only if their definitionals are
> equal AND they point to the exact same (one and only one)
> definitional existing within REBOL controlled memory.
>
...snip...
Your definition sounds logical, but it differs from the above. The only
suggestion is to get used to it.
-L
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