Growing Object-oriented Software, Guided by Tests notes

Structures and classes differ in the following particulars: Structures are value types; classes are reference types. A variable of a structure type contains the structure's data, rather than containing a reference to the data as a class type does. Structures use stack allocation; classes use heap allocation.

Structures and classes differ in the following particulars: Structures are value types; classes are reference types. A variable of a structure type contains the structure's data, rather than containing a reference to the data as a class type does. Structures use stack allocation; classes use heap allocation.