如何在F#中实现C#接口？

Question

我想在F#中实现以下C#接口:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Mono.Addins;

[TypeExtensionPoint]
public interface ISparqlCommand
{
    string Name { get; }
    object Run(Dictionary<string, string> NamespacesDictionary,    org.openrdf.repository.Repository repository, params object[] argsRest);
}   

这是我尝试过的,但它给了我:"表达式中或之前的不完整的结构化构造"

#light

module Module1

open System
open System.Collections.Generic;

type MyClass() =
    interface ISparqlCommand with
        member this.Name = 
            "Finding the path between two tops in the Graph"
        member this.Run(NamespacesDictionary, repository, argsRest) = 
            new System.Object

我究竟做错了什么？也许压痕是错的？

Answer 1

我在评论中验证了@Mark的回答.给出以下C#代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace org.openrdf.repository {
    public class Repository {
    }
}

namespace CSLib
{

    [System.AttributeUsage(System.AttributeTargets.Interface)]
    public class TypeExtensionPoint : System.Attribute
    {
        public TypeExtensionPoint()
        {
        }
    }


    [TypeExtensionPoint]
    public interface ISparqlCommand
    {
        string Name { get; }
        object Run(Dictionary<string, string> NamespacesDictionary, org.openrdf.repository.Repository repository, params object[] argsRest);
    }

}

以下F#实现(仅()在对象构造中添加更改)工作"很好":

#light

module Module1

open System
open System.Collections.Generic;
open CSLib

type MyClass() =
    interface ISparqlCommand with
        member this.Name = 
            "Finding the path between two tops in the Graph"
        member this.Run(NamespacesDictionary, repository, argsRest) = 
            new System.Object()

虽然您不再需要使用#light(这是默认设置),但您可能希望引用NamespaceDictionary参数名称警告"大写变量标识符通常不应在模式中使用,并且可能指示拼写错误的模式名称." 另请注意,您需要强制MyClass转换ISparqlCommand才能访问已实现的成员(不是您提出的问题,但很容易因来自C#而感到困惑):例如(MyClass() :> ISparqlCommand).Name