Signature Description Parameters
template<typename ... Ts>
size_type
load_data(IndexVecType &&indices, Ts ... args);
This is the most generalized load function. It creates and loads an index and a variable number of columns. The index vector and all column vectors are "moved" to DataFrame.
Returns number of items loaded
Ts: The list of types for columns in args
indices: A vector of indices (timestamps) of type IndexType;
args: A variable list of arguments consisting of
std::pair(const char *name, std::vector<T> &&data).
Each pair represents a column data and its name