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/**
 @class connection connection.h
 @author Jeremy Thornton http://libfbp.blogspot.co.uk/
 @copyright Copyright (c) 2013 Jeremy Thornton - MIT License http://opensource.org/licenses/MIT
 @version     0.5
 @since       0.1
 */

#ifndef fbp_connection_h
#define fbp_connection_h

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#include "component.h"

namespace fbp {
    
    component* component::operator()() {
        try {
            return run();
        }
        catch (que::queue_closed_exception) {
            return finally();

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#ifndef CPU_RELAX_H
#define CPU_RELAX_H

#include <intrin.h>

namespace sync {
  
    inline static void cpu_relax() {  
    
    #if (COMPILER == MVCC)

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#ifndef MCS_LOCK_H
#define MCS_LOCK_H

#include <cstdint>
#include <assert.h>
#include <atomic>
#include <thread>

#include <iostream>

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#include "mcs_lock.h"

namespace sync {

    void mcs_lock::lock() {
        //to acquire the lock a thread atomically appends its own local node at the tail of the list returning tail's previous contents
        auto prior_node = tail.exchange(&local_node,
                                        std::memory_order_acquire);
        if(prior_node != nullptr) {
            local_node.locked = true;

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    /**
     * @brief stopwatch idiom high precision timer for measuring software performance
     * @tparam PolicyClock - std::chrono::steady_clock (default), system_clock, high_resolution_clock
     */
    template<typename PolicyClock = std::chrono::steady_clock>
        class stopwatch {

        using clock_t = PolicyClock;

        public:

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#pragma once

#include <variant>
#include <string>
#include <vector>
#include <unordered_map>
#include <iostream>
#include <iomanip>
#include <sstream>

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# Create the data frame.
emp.data <- data.frame(
   emp_id = c (1:5), 
   emp_name = c("Rick","Dan","Michelle","Ryan","Gary"),
   salary = c(623.3,515.2,611.0,729.0,843.25), 
   
   start_date = as.Date(c("2012-01-01", "2013-09-23", "2014-11-15", "2014-05-11",
      "2015-03-27")),
   stringsAsFactors = FALSE
)

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#include <iostream>

#include "r_data_frame.h"

int main() {

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

	R::data_frame d;

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heterogeneous container

        id      name    salary  start_date
0       1       Rick    623.3   2012-01-01
1       2       Dan     515.2   2013-09-23
2       3       Michelle        611     2014-11-15
3       4       Ryan    729     2014-05-11
4       5       Gary    843.25  2015-03-27

Dan earns $515.2