C#

cechode wrote:

a lambada expression

among the things i've tried so far 
tried to convert this to a self calling kinda thing
var PP = A.Where(x = > x > 0).SelectMany(g = > B.Where(c = > c > 0).Select(c = > new { aa = g, bb = c })).ToList();

but to no avail

then tried to get a bunch of from clauses ( one for each inner list )

            var ttt = (from g in A
                      from c in B
                      select new { aa = g, bb = c }).ToList();

but also failed 


now i figured i'd ask the experts here 

private IEnumerable<List<int>> Test(List<List<int>> data)
{
     int numDigits = data.Count;
     int lastCount = data[numDigits - 1].Count;
     int[] indices = new int[data.Count];
     while (indices[numDigits - 1] < lastCount)
     {
          //yield return a list composed of data[0][indices[0]], data[1][indices[1]], ...
          
          indices[0]++;
          for (int idx = 0; idx < numDigits - 1; idx++)
          if (indices[idx] == data[idx].Count)
          {
              indices[idx] = 0;
              indices[idx + 1]++;
          }
      }
}

Delven Foo wrote:

Clipboard.Clear(); // crashes vs IDE

if (e.KeyCode == Keys.C && e.Modifiers == Keys.Control)
{
    //
}

Bitmap bmIn=(Bitmap)Image.FromFile(sourceFile);
Bitmap bmOut=new Bitmap(4*bmIn.Width, bmIn.Height);
Graphics grOut=Graphics.FromImage(bmOut);
for(int i=0; i<4; i++) grOut.DrawImage(bmIn, bmIn.Width*i, 0);
bmOut.Save(destinationFile, ImageFormat.Jpeg);
grOut.Dispose();
bmIn.Dispose();
bmOut.Dispose();