Initialize a Jagged Array the LINQ Way

Question

I have a 2-dimensional jagged array (though it\'s always rectangular), which I initialize using the traditional loop:

var myArr = new double[rowCount][];
for         


        

Answer 1

You can't do that with the Repeat method : the element parameter is only evaluated once, so indeed it always repeats the same instance. Instead, you could create a method to do what you want, which would take a lambda instead of a value :

    public static IEnumerable Sequence(Func generator, int count)
    {
        for (int i = 0; i < count; i++)
        {
            yield return generator();
        }
    }

    ...

    var myArr = Sequence(() => new double[colCount], rowCount).ToArray();