DeleteAt
From Director Online Wiki
list.deleteat(index) deleteat list, index
List command; deletes an item from a linear or property list at the specified position. The position is stated as a number, even for property lists. Only works with linear lists and property lists; other data types will generate an error.
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Example
This example creates a list, then deletes an element from the list, then displays it.
samplelist = [#a, #b, #c, #d] samplelist.deleteat(2) put samplelist
displays:
--"[#a, #c, #d]"
This example deletes an item from a property list. Notice that even though it's a property list, the item to be deleted with deleteAt() is a numeric index:
samplePropList = [#a:100, #b:200, #c:300, #d:400] samplePropList.deleteat(2) put samplePropList
displays:
--"[#a:100, #c:300, #d:400]"