FxCop:将矩阵作为属性返回(C#) [英] FxCop: Returning Matrix as Property (C#)
问题描述
我有一个静态类'Defaults'，该类应保存默认矩阵，这些默认矩阵转发到最后要求double[][]的接口.到目前为止，我只是将静态属性放在返回double[][] s的此类中.
现在要使其符合我们公司的编码标准，该代码必须符合FxCop的规则此处).
我想足够好"，所以我实现了该属性以返回IList<IList<double>>(尽管嵌套类型也很酷).但是，正如我所说，我需要使用的接口最终要求输入double[][]矩阵.我不知道如何在不显式转换回每个列表的情况下，将列表列表转换成数组 .当然可以，但是那样会产生大量的开销，特别是因为我什至不访问那些矩阵-我只会将它们传递给接口.
(PS:我知道，这是接口的问题，但目前我们无法更改.)
我发现使用ILists<IList<double>>确实无济于事，因为它违反了CA1819, which won't allow me to return a jagged array from a property like I did. And instead of arrays, I shall return IList or IEnumerable (as discussed here).
"Fair enough" I thought, so I implemented the property to return IList<IList<double>> (although nested types are uncool too). However, as I said, the interface which I need to work with asks for double[][] matrices in the end.. I have no idea how to get this list of lists into an array of arrays without explicitly converting back each list. Of course, I could, but that would create an insane amount of overhead, especially since I don't even access those matrices - I only pass them through to the interface.
(PS: I know, it's the Interface's fault, but at the moment we can't change that.)
Edit: I found out that using ILists<IList<double>> donesn't help anyway, since it violates CA1006. The easy solution that I took to make FxCop shut up was to make the properties internal. Anyway, the nicer solution is stated below. Alternatively, one may consider to use an indexed property, which is a bit messy in C# though.
I suggest, you create a class Matrix<T> that accepts a T[][] into its constructor and can be converted to T[][] and make your properties in Defaults return a Matrix<double> instance. The conversion can either be implemented implicitly, explicitly or using a method.
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