|dynarray||A dynamic array of elements to be searched for substring. An expression that resolves to a dynamic array.|
|substring||An expression that resolves to a substring to locate within string.|
|occurs||An expression that resolves to a positive integer specifying which occurrence of substring to locate.|
The INDEXS function returns a dynamic array of integers, each integer element containing the starting character position, counting from 1, of substring within the corresponding dynarray element. Matching of substring is case-sensitive. You use the occurs argument to specify which occurrence of substring to return the location of.
INDEXS returns 0 for a dynamic array element for any of the following:
If substring does not occur in the element.
If dynarray or substring is the null string ("").
If occurs specifies more occurrences of substring than appear in the element.
If occurs is 0, a negative number, a decimal number, the null string, or a non-numeric string.
If occurs is a mixed numeric string, the numeric part is parsed until a non-numeric character is encountered. Thus “7dwarves” is parsed as 7.