Summary

Section 21.1 Introduction

• Dynamic data structures can grow and shrink at execution time.

Section 21.2 Simple-Type structs, Boxing and Unboxing

• All simple-type names are aliases for corresponding structs in namespace System.

• Each simple type struct declares methods for manipulating the corresponding simple-type values.

• Each struct that represents a simple type inherits from class ValueType in namespace System.

• A boxing conversion creates an object that contains a copy of a simple-type value.

• An unboxing conversion retrieves a simple-type value from an object.