Question

Is there a way to convert from List<List<int>> to double[][] using LINQ?

I’ve figured out how to get from List<List<int>> to int[][] but I’m stuck on the cast. Here is what I have so far:

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();