I usually use getOne to check if items exist in a linear
list, so a one-liner would be:
on addItem theList, theItem
if not theList.getOne(theItem) then
theList.add(theItem)
jj
On Wed, 13 Dec 2000 20:59:03 +0800 John Erazo
<[EMAIL PROTECTED]> wrote:
>From: "Thomas Yeh" <[EMAIL PROTECTED]>
>
>> So maybe instead of stepping through the list
ourseleves, we can just let
>> the underlying C or Assembly code does it for us,
as in following handler.
>>
>> on addItem theList, theItem
>> if not ilk(theList, #linearList) then exit
>> itemPos = theList.getPos(theItem)
>> if itemPos then return itemPos
>> theList.add(theItem)
>> return theList.getPos(theItem)
>> end
>
>Thank you, Thomas.
>
>Yes. You are right when you said that it is case
sensitive
>as in the following example...
>
>-- Welcome to Director --
>put gList
>-- ["Earth", "Jupiter", "Mars", "Venus", "Saturn"]
>
>put getPos(gList, "Earth")
>-- 1
>
>put getPos(gList, "EARTH")
>-- 0
>
>put getPos(gList, "earth")
>-- 0
>
>-- Your script at work.
>addItem(gList, "earth")
>
>put gList
>-- ["Earth", "Jupiter", "Mars", "Venus", "Saturn",
"earth"]
>
>addItem(gList, "EARTH")
>
>put gList
>-- ["Earth", "Jupiter", "Mars", "Venus", "Saturn",
"earth", "EARTH"]
>
>
>Maybe going through each item on the list is till the
safest one.
>
>Thanks again for your help.
>
>
>John Erazo
>
>
>
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