Null reference types
Nullable reference types | Microsoft Docs
Performance optmizations: Givena reference of a non-null type, dereference operations and throw state-ments can proceed without the normal null check, thus providing a possible runtime advantage in some cases. If the runtime supports non-null types, the program-mer can limit where runtime checks are inserted by judicious use of non-null types.
[PDF File]Primitive vs Reference Types - Cornell University
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While the syntax with value types and reference types now looks similar, the functionality behind the scenes is very different. With value types, the C# compiler makes use of the type Nullable. This type is a value type and adds a Boolean field to define if the value type is null or non-null. With reference types, the C# compiler adds the ...
Towards Support for Non-null Types and Non-null-by ...
Type Null is a subtype of all reference types; its only instance is the null reference. Since Null is not a subtype of aluev types, null is not a member of any such type. orF instance, it …
[PDF File]Declaring and Checking Non-null Types in an Object ...
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Primitive vs Reference Types Primitive types int, short, long, float, byte, char, boolean, double Efficient 1 or 2 words Not an Object—unboxed abc 57 Reference types Objects and arrays String, int[], HashSet Usually require more memory Can have special value null Can compare null with ==, != Generates NullPointerException
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