create_data_frame.cpp

#include <iostream>

#include "r_data_frame.h"

int main() {

	std::cout << "heterogeneous container\n\n";

	R::data_frame d;

	d["id"] = { 1, 2, 3, 4, 5 };
	d["name"] = { "Rick", "Dan", "Michelle", "Ryan", "Gary" };
	d["salary"] = { 623.3, 515.2, 611.0, 729.0, 843.25 };
	d["start_date"] = R::as_dates({ "2012-01-01", "2013-09-23", "2014-11-15", "2014-05-11", "2015-03-27" });

	// print out data table 
	std::cout << d << '\n';

	// accessing data does need prior knowledge of the column data type
	auto money = std::get<double>(d["salary"][1]);

	// but C++ is strongly typed so there we go
	std::cout << std::get<std::string>(d["name"][1]) << " earns $" << money << "\n\n";

	std::cout << d["name"] << '\n';

}