Using a property without a "set;" ? What does it mean?

[accordtrader]

First of all, I'm NOT really familiar with C#. I didn't find any info about this. What happens if a C# property has a get but does NOT have a set? Sample code from @RSI.CS:

		public Series<double> Avg
		{
			get { return Values[1]; }
		}

		public Series<double> Default
		{
			get { return Values[0]; }
		}

The code in RSI does write them:

			Default[0]		= value0;
			Avg[0]		= constant1 * value0 + constant2 * Avg[1];

So what is happening up there? Just to understand, it is something like the below C++ code?

double& Avg(int index)
{
    return Values[index+1];
}

Certainly, in C++ you would use Avg(1) instead of Avg[1] since it is a function, I'm just curious what the logic actually does in @RSI.cs. Is the get in this case is like a reference so it can also write values via the get or is the set is auto-implemented so writing and reading the above properties is accessing a completely different index or even variable?

Also, is it standard C# (to not use a set), or is it something that NinjaTrader changed about C#? I don't know if ninjascript is just C# or does it have differences? (C# vs. ninjascript syntax)

[Shansen]

https://www.dotnetperls.com/property may be instructive.

[NinjaTrader_ChelseaB]

Hello accordtrader,

With a get and no set, this will return that object directly, without trying to set the value from the setter.

This basically gets the first series in the Values collection and returns that whole series.

That object can then be directly manipulated.


The brackets indicate an index of a collection, series, or array.

NinjaScript is C#. These are scripts that inherit from pre-made classes that have methods NInjaTrader will trigger with data behind the scenes.