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- Variant_type abstract "Variant is a data type in certain programming languages, particularly Visual Basic, OCaml, and C++ when using the Component Object Model.In Visual Basic (and Visual Basic for Applications) the Variant data type is a tagged union that can be used to represent any other data type (for example, integer, floating-point, single- and double-precision, object, etc.) except fixed-length string type and record types. In Visual Basic any variable, not declared explicitly or the type of which is not declared explicitly, is taken to be a variant.While the use of not explicitly declared variants is not recommended, they can be of use when the needed data type can only be known at runtime, when the data type is expected to vary, or when optional parameters and parameter arrays are desired. In fact, languages with a dynamic type system often have variant as the only available type for variables.Among the major changes in Visual Basic .NET, being a .NET language, the variant type was replaced with the .NET object type. There are similarities in concept, but also major differences, and no direct conversions exist between these two types. For conversions, as might be needed if Visual Basic .NET code is interacting with a Visual Basic 6 COM object, the normal methodology is to use .NET marshalling.In unrelated usage, variant type is also used to refer to an algebraic data type (comparable to a tagged union), whose constructors are often called variants. In languages such as OCaml and Haskell, this kind of variant type is the standard language building block for representing many data structures.".
- Variant_type wikiPageExternalLink variant.html.
- Variant_type wikiPageID "9731827".
- Variant_type wikiPageLength "5911".
- Variant_type wikiPageOutDegree "29".
- Variant_type wikiPageRevisionID "678065664".
- Variant_type wikiPageWikiLink Algebraic_data_type.
- Variant_type wikiPageWikiLink C++.
- Variant_type wikiPageWikiLink Category:BASIC_programming_language_family.
- Variant_type wikiPageWikiLink Category:Data_types.
- Variant_type wikiPageWikiLink Component_Object_Model.
- Variant_type wikiPageWikiLink Data_type.
- Variant_type wikiPageWikiLink Delphi_(programming_language).
- Variant_type wikiPageWikiLink Delphi_programming_language.
- Variant_type wikiPageWikiLink Double-precision_floating-point_format.
- Variant_type wikiPageWikiLink Double_precision.
- Variant_type wikiPageWikiLink Floating-point.
- Variant_type wikiPageWikiLink Floating_point.
- Variant_type wikiPageWikiLink Haskell_(programming_language).
- Variant_type wikiPageWikiLink IUnknown.
- Variant_type wikiPageWikiLink Integer_(computer_science).
- Variant_type wikiPageWikiLink Interface_(computer_science).
- Variant_type wikiPageWikiLink Interface_(computing).
- Variant_type wikiPageWikiLink Marshalling_(computer_science).
- Variant_type wikiPageWikiLink Null_pointer.
- Variant_type wikiPageWikiLink OCaml.
- Variant_type wikiPageWikiLink OLE_Automation.
- Variant_type wikiPageWikiLink Object_(computer_science).
- Variant_type wikiPageWikiLink Record_(computer_science).
- Variant_type wikiPageWikiLink Single-precision_floating-point_format.
- Variant_type wikiPageWikiLink Single_precision.
- Variant_type wikiPageWikiLink Tagged_union.
- Variant_type wikiPageWikiLink Type_system.
- Variant_type wikiPageWikiLink Virtual_method_table.
- Variant_type wikiPageWikiLink Visual_Basic.
- Variant_type wikiPageWikiLink Visual_Basic_.NET.
- Variant_type wikiPageWikiLink Visual_Basic_for_Applications.
- Variant_type wikiPageWikiLink Wide_character.
- Variant_type wikiPageWikiLinkText "''variant''".
- Variant_type wikiPageWikiLinkText "VARIANT".
- Variant_type wikiPageWikiLinkText "Variant type".
- Variant_type wikiPageWikiLinkText "Variant".
- Variant_type wikiPageWikiLinkText "variant data type".
- Variant_type wikiPageWikiLinkText "variant type".
- Variant_type wikiPageWikiLinkText "variant".
- Variant_type wikiPageWikiLinkText "variants".
- Variant_type hasPhotoCollection Variant_type.
- Variant_type wikiPageUsesTemplate Template:Merge_to.
- Variant_type wikiPageUsesTemplate Template:Unreferenced.
- Variant_type subject Category:BASIC_programming_language_family.
- Variant_type subject Category:Data_types.
- Variant_type hypernym Type.
- Variant_type type Article.
- Variant_type type Type.
- Variant_type type Article.
- Variant_type type Structure.
- Variant_type type Type.
- Variant_type comment "Variant is a data type in certain programming languages, particularly Visual Basic, OCaml, and C++ when using the Component Object Model.In Visual Basic (and Visual Basic for Applications) the Variant data type is a tagged union that can be used to represent any other data type (for example, integer, floating-point, single- and double-precision, object, etc.) except fixed-length string type and record types.".
- Variant_type label "Variant type".
- Variant_type sameAs Tipo_variante.
- Variant_type sameAs Variant_(תכנות).
- Variant_type sameAs m.02pqhrj.
- Variant_type sameAs Q2891489.
- Variant_type sameAs Q2891489.
- Variant_type sameAs 不定型別.
- Variant_type wasDerivedFrom Variant_type?oldid=678065664.
- Variant_type isPrimaryTopicOf Variant_type.