I'm trying to print the values from an ArrayList

May 11th, 2011, 01:55 AM

This is part of the debugging process. Could someone please tell me how I can do that?

Regards

Kay Wai

traderwerks · May 11th, 2011, 02:07 AM

kaywai

This is part of the debugging process. Could someone please tell me how I can do that?

Regards

Kay Wai

Code

   public static void PrintValues( IEnumerable myList )  {
      foreach ( Object obj in myList )
         Console.Write( "   {0}", obj );
      Console.WriteLine();
   }

谷歌是我們的朋友

May 11th, 2011, 03:28 AM

Will try it. Thx!

May 12th, 2011, 01:35 AM

I'm probably doing something wrong here. I can't seem to Add and Remove values from the ArrayList. The prints are not going to the output window. Could someone please help? I've attached the code. TIA! Kay Wai

P/S It's the first file in the zipfile.

NinjaTrader · May 12th, 2011, 08:03 AM

kaywai

I'm probably doing something wrong here. I can't seem to Add and Remove values from the ArrayList. The prints are not going to the output window. Could someone please help? I've attached the code. TIA! Kay Wai

P/S It's the first file in the zipfile.

Your problem is that your .Add() call will never be reached since you have a check in place on the list.Count property being greater than 2.

May 12th, 2011, 08:16 AM

May I know why that is the case? I only want to store the 2 most recent observations and discard the older observations.

Perhaps you could suggest a better way of doing this.

These observations only come about when a bool is true and I want to use the 2 most recent observations to draw horizontal lines which updates as new bars are created and stops when either 1) another bool becomes true or 2) the observation is "old". However, I would like to keep the old line on the chart, if possible.

I thought about using the DataSeries but I understand that when there is "no" data for it to add, it defaults to zero. trying to avoid that problem.

NinjaTrader · May 12th, 2011, 08:30 AM

kaywai

May I know why that is the case? I only want to store the 2 most recent observations and discard the older observations.

Perhaps you could suggest a better way of doing this.

These observations only come about when a bool is true and I want to use the 2 most recent observations to draw horizontal lines which updates as new bars are created and stops when either 1) another bool becomes true or 2) the observation is "old". However, I would like to keep the old line on the chart, if possible.

I thought about using the DataSeries but I understand that when there is "no" data for it to add, it defaults to zero. trying to avoid that problem.

Sure, you have a logic flaw in your code. Your code says only add to the arraylist if the arraylist has more than 2 items in it. Since the arraylist starts with a count of zero, it will never be greater than 2 since it can only ever be added to once the count is greater than 2. In other words, the greater than 2 condition can never be true.

This condition will never be executed since .Count > 2 will never be true. Your need to move the .Add() call outside of this if branch.

Code

if (TDSTBuy.Count > 2)
{ 
   TDSTBuy.RemoveAt(0); //if TDSTBuy is filled, drop the oldest value
   TDSTBuy.Add(setuphigh);
   Print(Time[0]);
 
}

May 12th, 2011, 08:45 PM

HAHAHAHA! Thx much!

May 13th, 2011, 01:47 AM

I change it like below, and I still don't know whether I'm getting anything into the ArrayList. Would you mind please helping?

Code


if (TDBuyExtendedSetupFX().buysetupmoveiscompleted)
{

drawtdstbuyline = true;
setuphigh = TDBuyExtendedSetupFX().hhbs;
TDSTBuy.Add(setuphigh);
if (TDSTBuy.Count > 2)
{
TDSTBuy.RemoveAt(0); //if TDSTBuy is filled, drop the oldest value
}
Console.WriteLine( "TDSTBuy" );
Console.WriteLine( " Count: {0}", TDSTBuy.Count );
Console.WriteLine( " Capacity: {0}", TDSTBuy.Capacity );
Console.Write( " Values:");
PrintValues(TDSTBuy);
}
}
publicstaticvoid PrintValues( IEnumerable TDSTBuy)
{
foreach (Object obj in TDSTBuy ) 
Console.Write(" {0}", obj);
Console.WriteLine();
}

I'm trying to print the values from an ArrayList

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I'm trying to print the values from an ArrayList