CustomizingEigen_Inheritance.cpp
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	#include <Eigen/Core>
	#include <iostream>

	class MyVectorType : public Eigen::VectorXd
	{
	public:
	MyVectorType(void):Eigen::VectorXd() {}

	// This constructor allows you to construct MyVectorType from Eigen expressions
	template<typename OtherDerived>
	MyVectorType(const Eigen::MatrixBase<OtherDerived>& other)
	: Eigen::VectorXd(other)
	{ }

	// This method allows you to assign Eigen expressions to MyVectorType
	template<typename OtherDerived>
	MyVectorType& operator=(const Eigen::MatrixBase <OtherDerived>& other)
	{
	this->Eigen::VectorXd::operator=(other);
	return *this;
	}
	};

	int main()
	{
	MyVectorType v = MyVectorType::Ones(4);
	v(2) += 10;
	v = 2 * v;
	std::cout << v.transpose() << std::endl;
	}