C#多维数组迭代 [英] C# multidimensional arrays iteration

问题描述

我是C#的新手，正在研究数组.

I'm new to C# and looking at arrays.

给出:

int[][] myJagArray = new int[5][];

以下为什么打印j(System.Int32 [])的 类型 ，而不打印每个j的内容?

Why does the following print the types of j (System.Int32[]), and not each j's contents?

foreach (int[] j in myJagArray)
{
    Console.WriteLine("j : {0}",j);
}

推荐答案

因为Array.ToString()不返回数组的内容，它返回类型名称，并且Console.WriteLine隐式地在您发送的每个对象上调用ToString()作为参数.

Because Array.ToString() does not return the contents of the array, it returns the type name, and Console.WriteLine implicitly calls ToString() on each object you send it as a parameter.

这与数组是多维数组的一部分这一事实无关，这只是CLR开发人员选择(或更确切地说选择 not 来)实现在System.Array上.

This has no regard to the fact that the array is part of a multi-dimensional array, it is simply the way the CLR developers chose to (or rather, chose not to) implement ToString() on System.Array.

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