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程序问答发布时间：2022-06-02 发布网站：大佬教程 code.js-code.com

大佬教程收集整理的这篇文章主要介绍了我如何在 VB.NET 中专门化模板/泛型？，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

如何解决我如何在 VB.NET 中专门化模板/泛型？？

开发过程中遇到我如何在 VB.NET 中专门化模板/泛型？的问题如何解决？下面主要结合日常开发的经验，给出你关于我如何在 VB.NET 中专门化模板/泛型？的解决方法建议，希望对你解决我如何在 VB.NET 中专门化模板/泛型？有所启发或帮助；

我正在尝试使用通用方法实现一个接口，我需要将它专门用于特定类型（可能有多种特定类型）

这是一个最小的可重现示例：

@H_741_9@module DeBUGMinRep

    Interface ILambda(Of In X,Out Y)
        Function Apply(__ As X) As Y
    End Interface

    Class Lambda(Of X,Y) : Implements ILambda(Of X,Y)

        Private inner_callable As Object

        Public Sub New(f As Object)
            inner_callable = f
        End Sub

        Public Function Apply(x As X) As Y Implements ILambda(Of X,Y).Apply
            Return inner_callable(X)
        End Function

    End Class

    Interface IMultiGetter
        Function getT(Of T As TypE)(key As Object) As T
    End Interface

    Class SimpleGetter(Of T As TypE) : Implements IMultiGetter

        Private Readonly f As ILambda(Of Object,T)

        Public Sub New(map As ILambda(Of Object,T))
            f = map
        End Sub

        Public Function getT(Of _T As TypE)(key As Object) As _T Implements IMultiGetter.getT
            Throw New NotImplementedException(
                "SimpleGetter(Of T).getT(Of _T)(...) is only valID for _T =T"
            )
        End Function

        'Example incorrect specialization deFinition
        Public Function getT(Of T)(key As Object) As T Implements IMultiGetter.getT
            Return f.Apply(key) 'value of type 'T' cAnnot be converted to type 'T' (T is shadowed)
        End Function

    End Class

End Module

我遇到了这些与实现接口 IMultiGetter 相关的错误：

Public function getT(Of _T As TypE)(key As Object) As _T
has multiple deFinitions with IDentical signatures
IMultiGetter.getT cAnnot be implemented more than once
Public function getT(Of T)(key As Object) As T cAnnot implement
DeBUGMinRep.IMultiGetter.Function getT(Of T As TypE)(key As Object) As T
because they differ by type parameter consTraints