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问题描述
如何在F#中创建扩展方法,例如,像这样的C#扩展:
How do I create an extension method in F#, for example, like this C# extension:
public static string Right(this string host, int index) { return host.Substring(host.Length - index); }推荐答案
对于可从F#调用的F#扩展名:
For an F# extension that can be called from F#:
type System.String with member x.Right(index) = x.Substring(x.Length - index)请注意,从Beta 1开始,这不会产生与C#兼容的扩展方法.
Note that as of Beta 1, this doesn't result in a C#-compatible extension method.
要生成C#可见的扩展方法(但不能用作F#中的扩展方法),请参见Brian编辑中指向原始帖子的链接.
For generating extension methods visible from C# (but not usable as extension methods in F#), see the link in Brian's edit to the original post.
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如何创建扩展方法(F#)?
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