ListIndex
Type
operator
Summary
Find the first or last occurrence of Needle within Haystack Target:An expression which evaluates to a list.
Syntax
the ( first | last ) index of <Needle> in <Haystack>
Description
Use the index of to find where particular elements occur within a
list. Haystack is scanned for an element that is equal to Needle,
and the position of the element found is returned. If neither the
"first index" nor "last index" are specified, the index of the first
element found is returned. If no element of Haystack is equal to
Needle, the return value is 0.
Parameters
| Name | Type | Description |
|---|---|---|
Needle | An expression which evaluates to any value. |
Examples
variable tVar as List
variable tOffset as Number
put ["a", "b", "c", "d", "b"]
put the index of "b" in tVar into tOffset
-- tOffset contains 2
put the last index of "b" in tVar into tOffset
-- tOffset contains 5