| Signature | Description | Parameters |
|---|---|---|
#include <DataFrame/DataFrameFinancialVisitors.h>
template<typename T, typename I = unsigned long>
struct NonZeroRangeVisitor;
// -------------------------------------
template<typename T, typename I = unsigned long>
using nzr_v = NonZeroRangeVisitor<T, I>;
|
This is a “single action visitor”, meaning it is passed the whole data vector in one call and you must use the single_act_visit() interface. This functor calculates the difference between the two given columns (i.e., vectors). If any of the differences results in a zero, every item in the result will be raised by an epsilon. |
T: Column data type. I: Index type. |
