C#索引器与类列表 [英] C# Indexer versus List of Classes

问题描述

嘿，我遇到了C#中的一个新概念，我很难找到索引器的用途.我知道索引器是对诸如数组之类的类进行索引的一种方法，但是与通用(或非常规)类列表相比，索引器的优点是什么?

Hey guys, Ive come accross a new concept in C# that I am having a hard time finding a use for - Indexers. I know that an indexer is a way to index classes like arrays, but what is the advantage of an indexer over a generic (or not) list of classes?

Could someone elaborate on some uses/applications of an indexer?

推荐答案

一个词:索引器更抽象抽象.在许多情况下，后面没有任何容器-属性是动态计算的.我广泛使用此功能；与"FindElementByName"或"GetElementByIndex"之类的东西相比，您可以将其视为整洁的语法糖果.


您可以在我的答案之一中的代码示例中找到有趣的应用程序:
数组中引用对象的位置? [ ^ ].

—SA

One word: indexer is more abstract. There are many cases when there is no any container behind — the property is calculated on the fly. I widely use this feature; you can consider it as a neat syntax candy, compared to something like "FindElementByName" or "GetElementByIndex".


You can find interesting application in my code sample in one of my answers here:
Location of a refernced object in an array?[^].

—SA

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