[REBOL] Re: disappearing data?
From: jeff:rebol at: 10-Nov-2000 17:36
Howdy, Ryan:
> Why is the translate-message/markup-data function "reusable" in the
> following code....
>
> translate-message: make object! [
>
> markup-data: func [
> data [object!]
> ][
> xml-tags: [
> ["author" "/author"]
> ["subject" "/subject"]
> ["date" "/date"]
> ["content" "/content"]
> ["messageID" "/messageID"]
> ]
Because the by having your static xml-tags block in the
function it has the effect of doing:
xml-tags: head xml-tags
for each function call.
Otherwise the function leaves the object's xml-tags pegged
at the tail:
. . .
> for x 1 (length? xml-tags) 1 [
. . .
> xml-tags: next xml-tags
Here's the basic effect:
o1: make object! [
f: does [
b: [1 2 3]
print mold b
forall b []
]
]
o2: make object! [
b: [1 2 3]
f: does [
print mold b
forall b []
]
]
>> o1/f
[1 2 3]
>> o1/f
[1 2 3]
>> o2/f
[1 2 3]
>> o2/f
[]
;- jeff
