Compile time creation of class member stl container (const std::array) filled with elements., C++ (vc++)

Compile time creation of class member stl container (const std::array) filled with elements.

#include <algorithm> // std:find_if
#include <vector> // std::vector
#include <set>
#include <iostream>
#include <memory>
#include <unordered_set>
#include <functional>
#include <map>
#include <unordered_map>
#include <forward_list>
#include <cassert>
#include <deque>
#include <iomanip>
#include <chrono>
#include <math.h>
#include <regex>
#include <array>

template<class T, size_t MaxIndex>
class BaseIndex
{
public:
	virtual ~BaseIndex() = default;

explicit BaseIndex(const size_t index)
		: _maxIndex(MaxIndex), _currentIndex(index) {}

virtual void DoSmth() = 0;

friend std::ostream & operator << (std::ostream & ss, BaseIndex & base_index)
	{
		ss << "Max: " << base_index._maxIndex << ". Current: " << base_index._currentIndex << std::endl;
		return ss;
	}

protected:

const size_t _maxIndex;

size_t _currentIndex{ 0u };

};

template<size_t MaxIndex>
class IndexStr : public BaseIndex<std::string, MaxIndex>
{
public:
	explicit IndexStr(const size_t index) :BaseIndex(index) {}

void DoSmth() override { std::cout << IndexStr::_maxIndex; }
};

template<size_t MaxIndex>
class IndexInt :public BaseIndex<int, MaxIndex>
{
public:
	explicit IndexInt(const size_t index) :BaseIndex(index) {}

void DoSmth() override { std::cout << IndexInt::_maxIndex; }
};

class Manager
{
private:

static const size_t _startStrIndex{ 11u };
	static const size_t _startIntIndex{ 10060u };

static const size_t _maxStrIndexes{ 5 };
	static const size_t _maxIntIndexes{ 120 };

public:

template <class T, size_t Size>
	using _container = const std::array<T, Size>;

template <class T>
	using _ptr = std::shared_ptr<T>;

// is it possible to combine this 2 types and use _maxStrIndexes only once?
	using _limited_str_ = IndexStr<_maxStrIndexes>;
	using _limited_str_ptr = _ptr<_limited_str_>;
	using _limited_str_ptr_container = _container<_limited_str_ptr, _maxStrIndexes>;

// const std::array<std::shared_ptr<IndexStr<_maxStrIndexes>>, _maxStrIndexes> _strIndexes
	_limited_str_ptr_container _strIndexes
	{
		// _startStrIndex
		// create indexes ???
		// std::integer_sequence ???
		std::make_shared<_limited_str_>(_startStrIndex), // 11 = _startStrIndex
		std::make_shared<_limited_str_>(12),
		std::make_shared<_limited_str_>(13),
		std::make_shared<_limited_str_>(14),
		std::make_shared<_limited_str_>(_startStrIndex + _maxStrIndexes - 1)
	};

// is it possible to combine this 2 types and use _maxIntIndexes only once?
	using _limited_int_ = IndexInt<_maxIntIndexes>;
	using _limited_int_ptr = _ptr<_limited_int_>;
	using _limited_int_ptr_container = _container<_limited_int_ptr, _maxIntIndexes>;

_limited_int_ptr_container _intIndexes
	{
		// _startIntIndex
		// create indexes???
		std::make_shared<_limited_int_>(_startIntIndex), // 10060u  _startStrIndex
		//...
		std::make_shared<_limited_int_>(_startIntIndex + _maxIntIndexes -1)
	};
};

template <class T, size_t Size >
void Process(const std::array<std::shared_ptr<T>, Size> _array)
{
	for (auto &&baseindex : _array)
		std::cout << *baseindex;
}

int main()
{
	Manager m;

Process(m._strIndexes);

//Process(m._intIndexes);

return 0;
}


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