Question

I have the following code:

        List<Point> xyData = new List<Point>();
        for (int i = 0; i < xdata.Length;i++ )
        {
            xyData.Add(new Point(xdata[i], ydata[i]));
        }

I want to iterate simultaneously over xdata and ydata, which have the same length

Now, I can add another counter,

        int i=0;
        List<Point> xyData = new List<Point>();
        foreach (double x in xdata){
            var  y = ydata[i];
            xyData.Add(new Point(x, y));
        }

But I want to write something like this (Pseudo code, does not compile)

        List<Point> xyData = new List<Point>();
        foreach (double x in xdata, double y in ydata){
            xyData.Add(new Point(x, y));
        }

Is there an elegant way to achieve what I want?

Edit:

I meant that I want to get a list like this:
[x0,y0],[x1,y1],[x2,y2].
Sorry for the ambiguity.

Answer 1

Use LINQ.

If you want the Carthesian product (x1,y1) (x1,y2) (x2,y1) (x2,y2)

var xyData = xData.SelectMany(yData,(x,y)=>new Point(x,y)).ToList();

If you want the merged list (x1,y1) (x2,y2)

var xyData = xData.Zip(yData,(x,y)=>new Point(x,y)).ToList();