如何正确写INT，双，浮法，数学等扩展方法？ [英] How do I properly write Math extension methods for int, double, float, etc.?

问题描述

我想写一系列的扩展方法来简化数学运算。例如：

I want to write a series of Extension methods to simplify math operations. For example:

而不是

Math.Pow(2, 5)

我希望能够写

2.Power(5)

这。是（在我心中）也更清晰。

which is (in my mind) clearer.

问题是：如何编写扩展方法，当我处理不同的数字类型？我是否需要写一个扩展方法为每种类型的：

The problem is: how do I deal with the different numeric types when writing Extension Methods? Do I need to write an Extension Method for each type:

public static double Power(this double number, double power) {
    return Math.Pow(number, power);
}
public static double Power(this int number, double power) {
    return Math.Pow(number, power);
}
public static double Power(this float number, double power) {
    return Math.Pow(number, power);
}

还是有一招，以允许任何数值类型单一的扩展方法工作？

Or is there a trick to allow a single Extension Method work for any numeric type?

谢谢！

推荐答案

不幸的是，我认为你被卡住这三个实现。获得多种类型的方法摆脱单一定义的唯一方法是使用泛型，但它是不可能的编写能够做一些专门为数字类型有用的泛型方法。

Unfortunately I think you are stuck with the three implementations. The only way to get multiple typed methods out of a single definition is using generics, but it is not possible to write a generic method that can do something useful specifically for numeric types.

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