Hi, I'm taking the opportunity to say "Hi, I'm a new one at this list." :)
I'd create a new list with the values of the combine properties and sort
that one and in the same time making the same changes to the original list.
My code:
on sortList iList
-- Creating the list to sort --
tList = []
repeat with tData in iList
-- This is similar to the 'Prop1 + Prop2 + Prop3' you used. --
tValue = tData[#Prop1] & tData[#Prop2] & tData[#Prop3]
tList.append(tValue)
end repeat
-- Tha actual sorting --
tCount = iList.count
repeat with i = 1 to tCount - 1
j = tCount
repeat while j > i
-- Checking the list you just created --
if tList[j-1]>tList[j] then
-- Making the change in the list you crated --
tData = tList[j-1]
tList[j-1] = tList[j]
tList[j] = tData
-- Making the change in the original list --
tData = iList[j-1]
iList[j-1] = iList[j]
iList[j] = tData
end if
j=j-1
end repeat
end repeat
return iList
end
on test
tt = [ [#Prop1: "abc", #Prop2: "02", #Prop3: "02"], [#Prop1: "abc",
#Prop2: "02", #Prop3: "01"], [#Prop1: "xyz", #Prop2: "02", #Prop3: "01"],
[#Prop1: "abc", #Prop2: "01", #Prop3: "01"]]
put sortList(tt)
end
-- [[#Prop1: "abc", #Prop2: "01", #Prop3: "01"], [#Prop1: "abc", #Prop2:
"02", #Prop3: "01"], [#Prop1: "abc", #Prop2: "02", #Prop3: "02"], [#Prop1:
"xyz", #Prop2: "02", #Prop3: "01"]]
Hope this help.
/Per-Erik Bergman
http://www.uncle.nu/
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Slava Paperno
Sent: den 31 maj 2004 18:36
To: [EMAIL PROTECTED]
Subject: <lingo-l> Sorting Challenge
Is there an xplat Xtra that expands Directors limited ability to sort lists?
Or, can someone please advise me on how to implement this sort?
I have a linear list where the value of each item is a property list,
[ [#Prop1: "abc", #Prop2: "02", #Prop3: "02"],
[#Prop1: "abc", #Prop2: "02", #Prop3: "01"],
[#Prop1: "xyz", #Prop2: "02", #Prop3: "01"],
[#Prop1: "abc", #Prop2: "01", #Prop3: "01"], ]
I need to sort the outer linear list on the compound values of the three
properties in the inner lists, so I get this:
[ [#Prop1: "abc", #Prop2: "01", #Prop3: "01"],
[#Prop1: "abc", #Prop2: "02", #Prop3: "01"],
[#Prop1: "abc", #Prop2: "02", #Prop3: "02"],
[#Prop1: "xyz", #Prop2: "02", #Prop3: "01"] ]
If this were a database table with three fields and four records, I'd use a
compound index, Prop1 + Prop2 + Prop3. How can I achieve the same result in
Director MX?
The size of my lists and the number of properties in each list are quite
modest, so peformance is not really an important factor.
Any advice will be appreciated.
Slava
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