Returns a list of items that are members of either list1 or list2. Only one instance of any item will be returned, even if it appears multiple times in either or both lists .
setUnion ( list1 As List, _
list2 As List, _
Optional key As Name = Identity, _
Optional test As Name = Equal ) As List
| Argument | Type | Description |
|---|---|---|
| list1 | List | the first list |
| list2 | List | the second list |
| key | Name | Optional; the name of function to be called with each item in the lists ; the function takes two arguments; the default is Identity. |
| test | Name | Optional; the name of test function to be applied to "key" results of items in the lists ; the function takes two arguments; the default is Equal. |
Intent >setUnion({a, b, c, d}, {a, b, c, e})
--> {e, c, b, a, d}
Intent >setUnion({a, a, b, c, d}, {a, b, c, e})
--> {e, c, b, a, d}