I have a series of extension methods defined for various classes in a C# library. I'm currently writing some F# code and instead of rewriting that code I would simply like to use my existing extension methods in my F# code.
我为C#库中的各种类定义了一系列扩展方法。我目前正在编写一些F#代码,而不是重写代码,我只想在我的F#代码中使用现有的扩展方法。
I have added a reference to the library and used the open statement to import the namespace, but the extension methods to not appear in F#
我添加了对库的引用并使用open语句导入命名空间,但扩展方法没有出现在F#中
2 个解决方案
#1
Update:
In the current version of F#, you can simply consume extension methods by adding
在当前版本的F#中,您可以通过添加来简单地使用扩展方法
open TheNamespaceOfExtensionMethod
to your source file (just like you do in C# with a using directive) and simply call the extension method as if it was a normal instance method.
到您的源文件(就像在C#中使用using指令一样)并简单地调用扩展方法,就像它是一个普通的实例方法一样。
By the way, you can always call them directly just like a normal static method and pass the object reference as the first parameter without any directives if you want. An extension method is simply a static method decorated with ExtensionAttribute under the hood.
顺便说一句,你总是可以像普通的静态方法一样直接调用它们,如果你愿意的话,可以将对象引用作为第一个参数传递而不带任何指令。扩展方法只是一个在引擎盖下使用ExtensionAttribute修饰的静态方法。
Original answer (before F# 2010 beta; not true anymore, as Dykam points out):
I don't think extension methods are supported by F#. You can always call them directly just like a normal static method and pass the object reference as the first parameter.
我不认为F#支持扩展方法。您可以像普通静态方法一样直接调用它们,并将对象引用作为第一个参数传递。
#2
Being able to 'import' C#/VB extension methods will be supported in the next release of F#.
下一版本的F#将支持能够“导入”C#/ VB扩展方法。
See also
C#中的F#扩展方法
for more detail on the topic.
有关该主题的更多详细信息。
#1
Update:
In the current version of F#, you can simply consume extension methods by adding
在当前版本的F#中,您可以通过添加来简单地使用扩展方法
open TheNamespaceOfExtensionMethod
to your source file (just like you do in C# with a using directive) and simply call the extension method as if it was a normal instance method.
到您的源文件(就像在C#中使用using指令一样)并简单地调用扩展方法,就像它是一个普通的实例方法一样。
By the way, you can always call them directly just like a normal static method and pass the object reference as the first parameter without any directives if you want. An extension method is simply a static method decorated with ExtensionAttribute under the hood.
顺便说一句,你总是可以像普通的静态方法一样直接调用它们,如果你愿意的话,可以将对象引用作为第一个参数传递而不带任何指令。扩展方法只是一个在引擎盖下使用ExtensionAttribute修饰的静态方法。
Original answer (before F# 2010 beta; not true anymore, as Dykam points out):
I don't think extension methods are supported by F#. You can always call them directly just like a normal static method and pass the object reference as the first parameter.
我不认为F#支持扩展方法。您可以像普通静态方法一样直接调用它们,并将对象引用作为第一个参数传递。
#2
Being able to 'import' C#/VB extension methods will be supported in the next release of F#.
下一版本的F#将支持能够“导入”C#/ VB扩展方法。
See also
C#中的F#扩展方法
for more detail on the topic.
有关该主题的更多详细信息。