Trait (computer programming): Difference between revisions

Revision as of 13:50, 28 January 2025

Revision as of 13:52, 28 January 2025

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* [[AmbientTalk]]: Combines the properties of Self traits (object-based multiple inheritance) and [[Smalltalk]]'s [[Squeak]] traits (requiring explicit composition of traits by the programmer). It builds on the research on ''stateful'' and ''freezable'' traits to enable state within traits, which was not allowed in the first definitions.<ref>{{cite conference | url=http://soft.vub.ac.be/Publications/2009/vub-prog-tr-09-04.pdf | title=Adding State and Visibility Control to Traits Using Lexical Nesting | conference=European Conference on Object-Oriented Programming (ECOOP 2009) | first1=Tom | last1=Van Cutsem | first2=Alexandre | last2=Bergel | first3=Stéphane | last3=Ducasse | first4=Wolfgang | last4=De Meuter | pages=220–243 | publisher=Springer-Verlag | isbn=978-3-642-03012-3 | date=2009 | series=Lecture Notes in Computer Science | volume=5653 |doi=10.1007/978-3-642-03013-0_11 |citeseerx=10.1.1.372.1265}}</ref>

*[[C Sharp (programming language)|C#]]: Since version 8.0, C# has support for ''default interface methods'',<ref>{{cite web | url=https://docs.microsoft.com/en-gb/dotnet/csharp/whats-new/csharp-8#default-interface-methods | title=Default interface methods | website=What's new in C# 8.0 | publisher=Microsoft | access-date=November 29, 2019}}</ref> which have some properties of traits.<ref>{{cite web | url=https://www.talkingdotnet.com/default-implementations-in-interfaces-in-c-sharp-8/ | title=Interfaces in C# 8.0 gets a makeover | website=Default Implementation in Interfaces in C# 8.0 | date=9 September 2019 | publisher=Talking Dotnet | access-date=November 29, 2019}}</ref>

* [[C++]]: Used in [[Standard Template Library]] and the [[C++ standardStandard libraryLibrary]] to support generic [[Container (abstract data structuretype)|container classes]]<ref>{{cite web | url=http://www.sgi.com/tech/stl/iterator_traits.html | title=iterator_traits&lt;Iterator&gt; | website=Standard Template Library | publisher=SGI}}</ref><ref>{{cite magazine | url=http://www.cantrip.org/traits.html | title=Traits: a new and useful template technique | first=Nathan C. | last=Myers | magazine=C++ Report | date=June 1995 | access-date=January 23, 2016}}</ref> and in the [[Boost C++ Libraries|Boost]] TypeTraits library.<ref>{{cite web | url=http://www.boost.org/more/generic_programming.html#traits | title=Generic Programming Techniques: Traits | website=Boost C++ Libraries | first=David | last=Abrahams | access-date=January 23, 2016}}</ref>

* [[Curl (programming language)|Curl]]: Abstract classes as mixins permit method implementations and thus constitute traits by another name.{{citation needed|date=January 2016}}

* [[Fortress (programming language)|Fortress]]<ref>{{cite web | url=http://stephane.ducasse.free.fr/Teaching/CoursAnnecy/0506-Master/ForPresentations/Fortress-PLDITutorialSlides9Jun2006.pdf | title=Fortress Programming Language Tutorial | first1=Guy | last1=Steele | first2=Jan-Willem | last2=Maessen | publisher=Sun Microsystems | date=June 11, 2006 | access-date=January 23, 2016}}</ref>