ScheduleC public interface OffsetsC Methods for accessing collection members by position. . An offset is an integer value that gives relative position of a member in the enumeration sequence of a collection.
Offsets start the count of the first member at zero, just like C array indexing.
Offsets provide an alternate means to access the members of a collection, without creating a separate index object. Access by offsets is supported on all collections regardless of whether its speed on a particular collection type.