xamarin.forms - 如何用 F# 声明 Xamarin.Forms.Dependency？

Question

我正在从 C# 移植这段代码:

using MicroBlink;

[assembly: Xamarin.Forms.Dependency (typeof (BlinkIDImplementation))]
namespace BlinkIDApp.iOS
{
    public class BlinkIDImplementation : IBlinkID
    {
        CustomDelegate customDelegate;
        bool isFrontCamera;

        public BlinkIDImplementation ()
        {
            customDelegate = new CustomDelegate ();

            BlinkID.Instance ().LicenseKey = "MZEFTUGV-******";
            BlinkID.Instance ().Delegate = customDelegate;
            isFrontCamera = false;
        }
    }
}

但是，这部分在F#中看不到怎么写:

[assembly: Xamarin.Forms.Dependency (typeof (BlinkIDImplementation))]

我尝试:

[<assembly: Xamarin.Forms.Dependency (typeof (BlinkIDImplementation))>]

然后我得到:

Error FS0841: This attribute is not valid for use on this language element. Assembly attributes should be attached to a 'do ()' declaration, if necessary within an F# module.

Answer 1

只写这个片段:

[<assembly: ...>]
do ()