Indexer (programming): Difference between revisions

Revision as of 13:04, 4 July 2022

Revision as of 17:02, 4 July 2022

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{{Confusing|reason=is this a C# or a general OO concept? Surely the interesting thing is the use of the keyword 'this', not what is emphasised here? Why is this whole article only sourced to one C# forum post (the other forum post is a dead link). Maybe an example of use of the example class would demonstrate the purpose of the construct. Wikipedia is not a manual, guidebook or textbook [[WP:NOTHOWTO]].|date=April 2015}}

In [[object-oriented programming]], an '''indexer''' allows instances of a particular class or struct to be indexed just like arrays.<ref>{{cite web|accessdateaccess-date=2011-08-01 |author=jagadish980 |date=2008-01-29 |___locationwebsite=http://forums.sureshkumar.net/forum.php |publisher=Bulletin: SURESHKUMAR.NET FORUMS |title=C# - What is an indexer in C# |url=http://forums.sureshkumar.net/vb-asp-net-interview-technical-questions/16320-c-what-indexer-c.html |archive-url-status=dead |archiveurl=https://web.archive.org/web/20090922193214/http://forums.sureshkumar.net/vb-asp-net-interview-technical-questions/16320-c-what-indexer-c.html |archivedatearchive-date=September 22, 2009 }}</ref> It is a form of [[operator overloading]].

== Implementation ==

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Here is a C# example of the usage of an indexer in a class:

<ref>{{cite web

| accessdateaccess-date = 2011-08-01

| publisher website= .net Funda

| title = C# Interview Questions

| url = http://www.dotnetfunda.com/interview/exam4161-what-is-an-indexer-in-csharp-.aspx}}</ref>

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== References ==

{{Reflist|2}}

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