Question

Something like:

forelement (element G_Element, Grid)
{
    Grid[G_Element.dim1, G_Element.dim2] = 
        new clsGridElement(G_Element.dim1, G_Element.dim2);
}

instead of

for (int X = 0; X < GridWidth; X++) 
    for (int Y = 0; Y < GridHeight; Y++) 
        Grid[X, Y] = new clsGridElement(X, Y);

If something doesn’t innately exist, is that something that could be created?

Thanks,
Tim

Answer 1

You could do this – just make a custom type that exposes these, and use a regular foreach:

public class TwoDimensionalIterator
{
    public TwoDimensionalIterator(int i, int j)
    {
       this.Dim1 = i; this.Dim2 = j;
    }
    public int Dim1 { get; private set; }
    public int Dim2 { get; private set; }
}

Then make an extension method somewhere to return an enumerable of this:

public static IEnumerable<TwoDimensionalIterator> IterateTwoDim<T>(this T[,] array)
{
     for (int i=0;i<array.GetLength(0);++i)
         for (int j=0;i<array.GetLength(1);++j)
            yield return new TwoDimensionalIterator(i,j);
}

With this, you could then do:

foreach(var index in Grid.IterateTwoDim())
{
    Grid[index.Dim1, index.Dim2] = new clsGridElement(index.Dim1, index.Dim2);
}