4. Types
The types of the C# language are divided into two main categories: value types and reference types. Both value types and reference types may be generic types, which take one or more type parameters. Type parameters can designate both value types and reference types.
type: value-type reference-type type-parameter
A third category of types, pointers, is available only in unsafe code. This issue is discussed further in §18.2.
Value types differ from reference types in that variables of the value types directly contain their data, whereas variables of the reference types store references to their data, the latter being known as objects. With reference types, it is possible for two variables to reference the same object, and thus ...
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