first | sequencedcollection | firstIndexOfIdentity |
Return the index of the first occurrence of anElement between the index positions fromIndex and toIndex. If anElement does not occur between these indices, then return zero.
anelement | GROUP |
fromindex | PIC 9(9) COMP-5 |
toindex | PIC S9(9) COMP-5 |
anindex | PIC S9(9) COMP-5 |