如何巧妙地查询相应的对象数组项？ [英] How to neatly query corresponding object array items?

问题描述

我有一个会被用于一些工艺对象的数组

I have an array of objects that'll be used for some process.

var x = new List<MyObject>() { new MyObject(), new MyObject(), ... }.ToArray();

的处理之后，返回对应于每个输入对象的结果的数组。

After the process, it returns an array of results corresponding to each of the input objects.

var y = MyProcess(x); // returns List<MyResult>

现在，我的问题是我如何可以查询给定的条件结果列表和相应的输入对象？

Now, my question is how can I query a list of results with a given condition and the corresponding input objects?

例如，如果 Y [2] .IsOkay 是假，我想同时获得 X [2] 和 Y [2] 在另一个数组。
和数组x和y的对象没有除指数的参考项。

For example, if y[2].IsOkay is false, I want to obtain both x[2] and y[2] in another array. And the objects in array x and y don't have a reference key except the index.

推荐答案

好了，您可以使用 邮编 配对起来：

Well, you can use Zip to pair them up:

var pairs = x.Zip(y, (a, b) => new { a, b })
             .Where(pair => !pair.b.IsOkay)
             .ToArray();

您可以更改传递给邮编委托如果你想以不同的方式组成两个值 - 例如，使用一个名为类型，而不是匿名类型我上面有

You can change the delegate passed to Zip to compose the two values differently if you want - for example, using a named type instead of the anonymous type I've got above.

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