delegate usage with EMA

[ETFVoyageur]

I'm wrestling with delegates and data types ... is there an example I could take a look at? Here is some simple code that does not work:

private delegate Indicator foo(Series<double> d, int i);
...
foo foo2 = EMA;
double d = foo2(Inputs[0], 10)[0];

That fails on Inputs[0] with the error message:

Argument 1: cannot convert from 'NinjaTrader.NinjaScript.ISeries<double>' to 'NinjaTrader.NinjaScript.Series<double>'

The problem seems to be with my delegate usage because the following code, which should be equivalent, compiles just fine:

double dd = EMA(Inputs[0], 10)[0];

[bltdavid]

The error message indicates you should try,

private delegate Indicator foo(ISeries<double> d, int i);

Does that work?

[ETFVoyageur]

That's embarrassing. I could swear that I tried that and there was a problem, which is why I posted. It seems to be working now, and I deleted the failing code, so I don't know what I did differently before. Thanks.

It's not allowing me to do anything I could not do before, but it's much nicer code -- it allows eliminating some ugly nested switch statements.