first good build. Part, PartFrame, Matrix

MbDCode/SparseColumn.h

@@ -0,0 +1,14 @@
+#pragma once
+#include "SparseVector.h"
+
+namespace MbD {
+	template <typename T>
+	class SparseColumn : public SparseVector<T>
+	{
+	public:
+		SparseColumn() {}
+		SparseColumn(std::initializer_list<std::pair<const int, T>> list) : SparseVector<T>{ list } {}
+		SparseColumn(std::initializer_list<std::initializer_list<T>> list) : SparseVector<T>{ list } {}
+	};
+}
+