Re: comparing and updating lists
Re: comparing and updating lists
- Subject: Re: comparing and updating lists
- From: julifos <email@hidden>
- Date: Tue, 21 Jan 2003 16:55:11 +0100
>
hiya!
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>
a newbie query about lists:
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>
If I have two lists
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list1 {"1","2","3"}
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list2 {"1", "2", "3", "4"}
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what i want to do is:
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1) loop through both lists
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2) get a list of those items which are in list2 but not in list1
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3) copy the missing items from list2 to list1
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What I eventually want to do is to have a script which checks a
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folder (list2) periodically for newly added files (like "4") and
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copies any newly added files to another folder (list1).
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any help or advice or example scripts would be greatly appreciated.
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thanx loads for your patience!
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>
bis
>
--
A quick sample:
set list1 to {"1", "2", "3"}
set list2 to {"1", "2", "3", "4"}
if list1's length is not equal to list2's length then -- only if needed
repeat with i in list2
if i is not in contents of list1 then set list1's end to i's
contents
end repeat
end if
list1 --> {"1", "2", "3", "4"}
JJ
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