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19-Apr 1:22 UTC
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Don't try this at home

 [1/4] from: ammon:rcslv at: 27-Nov-2002 1:07


Hi, Has anyone seen a block that looks like this: [...] I just discovered it, and I would like to know what it means, it was generated by the following code:
>> blk: blkr: []
== []
>> foreach word [a b c] [
[ append blkr compose [make (word) []] [ blkr: third blkr [ ] == [make b [...] make c [...]]
>> blk
== [make a [make b [...] make c [...]]]
>> blkr
== [make b [...] make c [...]] Two things, it shouldn't have given me that result, and if you DO it then the console dies, no message or anything. Shouldn't it have essentially done this:
>> blk: blkr: []
== []
>> word: 'a
== a
>> append blkr compose [make (word) []]
== [make a []]
>> blkr: third blkr
== []
>> word: 'b
== b
>> append blkr compose [make (word) []]
== [make b []]
>> blkr: third blkr
== []
>> word: 'c
== c
>> append blkr compose [make (word) []]
== [make c []]
>> blk
== [make a [make b [make c []]]]
>>
Any ideas? Thanks!! Ammon Johnson --- CIO Addept ------------------ (www.addept.ws) 435-616-2322 -------- ([ammon--addept--ws])

 [2/4] from: ammon:rcslv at: 27-Nov-2002 1:44


HI again! The answer is a simple COPY/DEEP:
>> foreach word [a b c] [
[ append blkr COPY/DEEP compose [make (word) []] [ blkr: third blkr [ ] That way it gets a new block each time just like the console does. ;-) Enjoy!! Ammon Johnson --- CIO Addept ------------------ (www.addept.ws) 435-616-2322 -------- ([ammon--addept--ws]) ----- Original Message ----- From: "Ammon Johnson" <[ammon--rcslv--com]> To: <[rebol-list--rebol--com]> Sent: Wednesday, November 27, 2002 1:07 AM Subject: [REBOL] Don't try this at home
> Hi, > > Has anyone seen a block that looks like this: > > [...] > > I just discovered it, and I would like to know what it means, it was
generated by the following code:
> >> blk: blkr: [] > == []
<<quoted lines omitted: 8>>
> == [make b [...] make c [...]] > Two things, it shouldn't have given me that result, and if you DO it then
the console dies, no message or anything. Shouldn't it have essentially done this:

 [3/4] from: al:bri:xtra at: 27-Nov-2002 21:55


Ammon wrote:
> Has anyone seen a block that looks like this: > > [...]
It's the console (and 'mold-s) attempt to show a block that contains itself or other blocks that are recursive. Andrew Martin ICQ: 26227169 http://valley.150m.com/

 [4/4] from: carl::cybercraft::co::nz at: 27-Nov-2002 22:43


Hi Ammon, The simpliest way (that I know of) to produce that is this...
>> a: []
== []
>> insert/only a a
== []
>> a
== [[...]] So, it means a block within itself...
>> length? a
== 1
>> same? a a/1
== true And I try not to think about it... (: Carl. On 27-Nov-02, Ammon Johnson wrote:
> HI again! > The answer is a simple COPY/DEEP:
<<quoted lines omitted: 63>>
>> Addept ------------------ (www.addept.ws) >> 435-616-2322 -------- ([ammon--addept--ws])
-- Carl Read
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