Question

有没有办法使用LINQ从List<List<int>>转换为double[][]？

我已经弄清楚如何从List<List<int>>到int[][]，但我仍然坚持演员。以下是我到目前为止的情况：

List<List<int>> ints = new List<List<int>>()
{
    new List<int>(){0, 1, 2},
    new List<int>(){0, 1, 2},
    new List<int>(){0, 1, 2},
};

// int[][]
ints.Select(x => x.ToArray()).ToArray();

Answer 1

double[][] doubles = ints.Select(x => x.Select(y => (double)y).ToArray())
                         .ToArray();

Answer 2

ints.Select(x => x.Select(y => (double)y).ToArray()).ToArray();

Answer 3

您需要转换为双重

ints.Select(x => x.Select(y => Convert.ToDouble(y)).ToArray()).ToArray()

Answer 4

ints.Select(x => x.Select(Convert.ToDouble).ToArray()).ToArray();

转换列表<list <int>＆gt;加倍[] [] </list <int>

4 个答案: