[英]Extension Methods vs. Regular Methods - Best Practice Ideas
I'm having a bit of a difficult time determining when to implement a method as an extension method and when to implement a method as a stand-alone method. 我在确定何时将方法实现为扩展方法以及何时将方法实现为独立方法时遇到了一些困难。 What are some best practices people follow in determining this?
人们在确定这一点时会遵循哪些最佳做法?
Use an extension method if any of the following conditions are true: 如果满足以下任一条件,请使用扩展方法:
Otherwise, you should use a real method on the actual type itself. 否则,您应该对实际类型本身使用实际方法。
I don't think it makes a whole lot of sense to create an extension method for a class or struct that you own the source for - why confuse readers with an extension method when a regular method will suffice? 我认为为您拥有源代码的类或结构创建扩展方法没有多大意义 - 为什么在常规方法足够时将读者与扩展方法混淆?
Suggested reading: Framework Design Guidelines: Extension Methods 建议阅读: 框架设计指南:扩展方法
* Imagine that you wanted to add convenience methods to a type but don't want to create dependencies to assemblies or types that shouldn't be part of the API. * 想象一下,您希望为类型添加便捷方法,但不希望创建不应该属于API的程序集或类型的依赖项。 You could use extension methods to manage this.
您可以使用扩展方法来管理它。
Try this Stackoverflow post for a discussion about extension method best practices. 试试这篇Stackoverflow文章,讨论扩展方法的最佳实践。
From my perspective I use extension methods when I have a lot of utility functions for a particular type. 从我的角度来看,当我为特定类型提供大量实用函数时,我会使用扩展方法。
I find that... 我发现...
string.ExtensionMethod();
looks cleaner than... 看起来比...更清洁
StringHelper.ExtensionMethod("string to do something with");
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