在库中组织扩展函数
在设计一个流畅且依赖于扩展函数的库时，提供扩展函数的替代行为的方法是什么？
例如，一个进行某种格式化的库：
(123.456879)
.RoundTo(2) // Rounds to 2 places
.ToCurrency() // Applies the appropriate currency symbol
.ToString()
鉴于 RoundTo 和 ToCurrency 将是扩展函数，那么改变 行为的方法是什么？ RoundTo 和/或 ToCurrency？
谢谢， L-
In designing a library that is fluent and that relies on extension functions what would be a way to provide an alternative behavior of an extensions function?
So for instance a library that does some kind of formatting:
(123.456879)
.RoundTo(2) // Rounds to 2 places
.ToCurrency() // Applies the appropriate currency symbol
.ToString()
Given that RoundTo, and ToCurrency would be extension functions, what would be a way to change the behavior of RoundTo and/or ToCurrency?
Thanks,
L-
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如果重写是指在基类中具有虚拟扩展函数并在派生类中重写，则不能 - 扩展函数必须是静态的，并且静态函数不能被重写。
编辑：在您澄清之后，也许您可以编写 库的配置部分（或仅使用应用程序设置）并让您的库读取配置参数。
If by overriding you mean having an extension function virtual in a base class and overridden in a derived class, then you cannot - extension functions must be static, and static functions cannot be overridden.
EDIT: after your clarification, maybe you could write a configuration section for the library (or just use the application settings) and have your library read the configuration parameters.