BETA (programming language): Difference between revisions

Revision as of 08:02, 22 November 2022

Revision as of 08:24, 22 November 2022

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{{Infobox programming language}}

| name = BETA

| logo =

| paradigm = [[Object-oriented programming|Object-oriented]]

| year =

| designer = [[Bent Bruun Kristensen]], [[Ole Lehrmann Madsen]], [[Birger Møller-Pedersen]], [[Kristen Nygaard]]

| developer =

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| latest_test_version =

| latest_test_date =

| typing =

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| influenced_by = [[Simula]]

| influenced =

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| website = {{URL|beta.cs.au.dk}}

}}

'''BETA''' is a pure [[object-oriented]] language originating within the [[Kristen Nygaard|"Scandinavian School"]] in object-orientation where the first object-oriented language [[Simula]] was developed.<ref name="overview">Source: [http://daimi.au.dk/~beta/Papers/BetaOverview/BetaOverview.pdf] Ole Lehrmann Madsen: An overview of BETA</ref> Among its notable features, it introduced [[nested class]]es, and unified classes with procedures into so called patterns.

The project is inactive as of October 20292020.<ref>https://beta.cs.au.dk/</ref>

, and unified classes with procedures into so called patterns.

The project is inactive as of October 2029

==Features==

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From a technical perspective, BETA provides several unique features. Classes and Procedures are unified to one concept, a [[BETA pattern|Pattern]]. Also, classes are defined as properties/attributes of objects. This means that a class cannot be instantiated without an explicit object context. A consequence of this is that BETA supports [[nested class]]es. Classes can be virtually defined, much like virtual methods can be in most object-oriented programming languages. Virtual entities (such as methods and classes) are never overwritten; instead they are redefined or specialized.

BETA supports the object-oriented perspective on programming and has comprehensive facilities for procedural and functional programming. It has powerful abstraction mechanisms to support identification of objects, classification and composition. BETA is a statically typed language like Simula, [[Eiffel (programming language)|Eiffel]] and [[C++]], with most type checking done at compile-time.<ref name="overview">Source: [http://daimi.au.dk/~beta/Papers/BetaOverview/BetaOverview.pdf] Ole Lehrmann Madsen: An overview of BETA</ref> BETA aims to achieve an optimal balance between compile-time type checking and run-time type checking.

===Patterns===