F#编译FSharpChart:内联错误

Question

我试图从http://blogs.msdn.com/b/dsyme/archive/2011/04/01/fsharpchart-wrapping-the-system-windows-forms-datavisualization-charting-charting-types.aspx，并得到类似的编译错误

Error   1   The value 'StackedArea100' was marked inline but its implementation makes use of an internal or private function which is not sufficiently accessible   

来自

type FSharpChart =
    /// Displays multiple seriesÿof data as stacked areas. The cumulative proportion
    /// of each stacked element is always 100% of the Y
    /// axis.
    static member StackedArea100<'TY when 'TY :> IConvertible>(data: seq<'TY>) = 
        GenericChart<_>.Create<StackedArea100Chart>(oneY data)
    /// Displays multiple seriesÿof data as stacked areas. The cumulative proportion
    /// of each stacked element is always 100% of the Y
    /// axis.
    static member inline StackedArea100<'TX, 'TY when 'TX :> IConvertible and 'TY :> IConvertible>(data:seq<'TX * ('TY)>) = 
        GenericChart<_>.Create<StackedArea100Chart>(oneXYSeq data)
    /// Displays multiple seriesÿof data as stacked areas. The cumulative proportion
    /// of each stacked element is always 100% of the Y
    /// axis.

有人能告诉我发生了什么事吗？谢谢

Answer 1

没有理由将StackedArea100（和其他类似成员）设为inline。您可以通过仅用static member替换所有出现的static member inline来修复它。如果你能在F#团队的博客上发表评论，那就太好了（这样他们就可以在下一个版本中纠正这一点）。

要添加更多详细信息：

F#编译器不喜欢代码的原因是实现中使用的oneXYSeq函数应该是internal，因此StackedArea100不能内联（因为它需要访问一个不可访问的辅助函数）。它在F#Interactive中工作的原因是FSharpChart.fsx文件已加载到当前程序集中，因此internal成员可见。

Andy为什么源代码中有不必要的inline？这是因为我最初尝试使用帽子类型（例如^T）来编写适用于任何数字类型的泛型成员（而帽子类型需要inline）。然后我们决定切换到IConvertible，因此不再需要inline注释。