running total sum( cumulative sum)

[zteck]

Hello, I'm trying to do a cumulative sum( running sum total) of an list of number.
I found this code for C#:


public static IEnumerable<double> CumulativeSum(this IEnumerable<double> sequence)
{
double sum = 0;
foreach(var item in sequence)
{
sum += item;
yield return sum;
}
}

I'm a C# beginner so I don't know how and where put this code in the strategy.
Can someone give me some advice? thank you so much!

[NinjaTrader_ChrisL]

Hello zteck,

Thanks for the post.

This is an extension method. Extention methods must belong to a static class, which is not possible for a NinjaScript Strategy/Indicator. You can just create this method inside of your Strategy class without the extension. Please see the example attached.

Here is a publicly available link on the yield keyword:

https://msdn.microsoft.com/en-us/library/9k7k7cf0(v=vs.100).aspx

Please let us know if we may be of any further assistance.

[zteck]

Thank you so much Chris. I appreciate!