[REBOL] Func, why does it remeber previous data?
From: micael:gullmes:telenordia:se at: 10-Nov-2000 22:10
Hi all,
I am playing around with a function that search through a block containing
binary values.
My function searches through the block for the binary #{ACDC} plus #{??}
The problem I encounter is when I run the function multiple times, the
binary variable "data_to_find" remembers old data from the same function,
even if I clear it.
Can someone please explain this behaviour and give me some hints of how to
get around it?
Here's the script:
-----------------------------------------------------------
find_stuff: func ["Find stuff in data_block"] [
tail_data: ""
tail_data: ask "what data do you want to find after ACDC? "
probe data_to_find: ""
probe clear data_to_find
probe data_to_find: #{ACDC}
probe append data_to_find do rejoin ["#{" tail_data "}"]
result: []
clear result
foreach data data_block [
if find data data_to_find [
append result data
]
]
print rejoin ["Found " length? result " containing " data_to_find]
]
------------------------------------------------------------
Here's an example of running the script:
------------------------------------------------------------
>> data_block: [#{ACDC01} #{ACDC02} #{ACDC03} #{ACDC01} #{ACDC02}]
== [#{ACDC01} #{ACDC02} #{ACDC03} #{ACDC01} #{ACDC02}]
>> find_stuff
what data do you want to find after ACDC? 01
#{ACDC}
#{ACDC01}
Found 2 containing #{ACDC01}
>> find_stuff
what data do you want to find after ACDC? 01
#{ACDC01} <----- Where does 01 come from?
#{ACDC0101}
Found 0 containing #{ACDC0101}
>> find_stuff
what data do you want to find after ACDC? 02
#{ACDC0101} <----- Where does 0101 come from?
#{ACDC010102}
Found 0 containing #{ACDC010102}
>>
-----------------------------------------------------------
Brgds /Micael
