[REBOL] Re: copy/deep
From: rotenca:telvia:it at: 25-Jul-2003 0:50
Hi Andrew,
> Can you give an example, please?
The example was in the previous message and is the reason for which Brett
collect does not work with Foreach: it uses a reference to the result block
used by insert, but after the copy/deep, the reference has changed and it
refers now to a copy of the the result block.
>From the previous message:
now happens:
a: []
b: reduce [a a]; == [[] []]
same? b/1 b/2; == true
c: copy/deep b; == [[] []]
same? c/1 c/2;== false
Instead I should like:
c: copy/deep/only b; == [[] []]
same? c/1 c/2; == true
Visual explanation (i hope):
b is:
[ 1 2 ]
| |
\ /
a
After the copy/deep c is:
[ 1 2 ]
| |
| |
copy of a another copy of a
What it should be?
[ 1 2 ]
| |
\ /
copy of a
---
Ciao
Romano
