| ScanTSource(IEnumerableTSource, FuncTSource, TSource, TSource) | Performs a scan (inclusive prefix sum) on a sequence of elements. |
| ScanTSource, TState(IEnumerableTSource, TState, FuncTState, TSource, TState) | Like AggregateTSource(IEnumerableTSource, FuncTSource, TSource, TSource) except returns the sequence of intermediate results as well as the final one. An additional parameter specifies a seed. |