#include "pair.h"

using std::string;

pair::pair() : m_right(0.0) { }
pair::pair(string s, double x) : m_left(s), m_right(x) { }

const string& pair::left() const
{
	return m_left;
}

string& pair::left()
{
	return m_left;
}

const double& pair::right() const
{
	return m_right;
}

double& pair::right()
{
	return m_right;
}

pair& pair::operator+=(const pair& other)
{
	m_left += other.m_left;
	m_right += other.m_right;
	return *this;
}

pair operator+(const pair& a, const pair& b)
{
	pair p(a);
	p += b;
	return p;
}