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Nullable type

Nullable types are a feature of some programming languages which allow a value to be set to the special value NULL instead of the usual possible values of the data type. In statically typed languages, a nullable type is an option type,[citation needed] while in dynamically typed languages (where values have types, but variables do not), equivalent…

Language support, Compared with null pointers & Example

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Language support

BallerinaDartKotlinCeylonSAS
17 related topics

Compared with null pointers

PointersNULLC. A. R. HoareAlgol WJava
6 related topics

Example

C#
1 related topics

Compared with option types

Null object pattern
1 related topics

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Example

  • C# C Sharp (programming language)

Compared with null pointers

Compared with option types

Language support

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Map overview Semantic statistics

Nullable type

Nodes40
Edges39
Triples17
Avg. degree1.95
Density0.05
Components1

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Nullable type

Top relations

related to Example · 9
Nullable type → Also, An, Boolean, However, In, Its, NullableBoolean, NullableInteger, This
related to Compared with option types · 2
Nullable type → Nullable, There
related to Language support · 2
Nullable type → Statically, The
is a · 1
Nullable type → option type

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Important terminology

null nullable type types languages value values programming also variable integer boolean citation needed option pointers set variables false example

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Nullable typeis aoption type0.90text
integersinstance ofNULL is undefined.Primitive types0.80text
Booleans cannot generally be nullinstance ofNULL is undefined.Primitive types0.80text
but the corresponding nullable typesinstance ofNULL is undefined.Primitive types0.80text
Nullable typerelated to Compared with option typesNullable0.60section
Nullable typerelated to Compared with option typesThere0.60section
Nullable typerelated to ExampleAn0.60section
Nullable typerelated to ExampleAlso0.60section
Nullable typerelated to ExampleThis0.60section
Nullable typerelated to ExampleIn0.60section
Nullable typerelated to ExampleNullableInteger0.60section
Nullable typerelated to ExampleNullableBoolean0.60section

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    Min side: 3
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