Is a function calculated each time when it is called?

[FireFly]

Just a general question:

If I have defined a certain function that I call many times in my strategy, will it be calculated every time that I call it or just once per OnbarUpdate, i.e. NT keeps the result once calculated?

Or should I for maximum efficiency assign it to a variable and then use that variable so that the function is called only once?

Of course the last thing is easy to do, but maybe there is no efficiency gain doing this anyway...

[NinjaTrader_Ray]

Functions are are calculated only when you call them.

[FireFly]

Yes I understand that.
But my question is if they will be calculated for example 20 times if I call them 20 times within the same OnBarUpdate.

Will NT 'remember' the result, or should I assign a variable such that the function only has to be calculated once?

[NinjaTrader_Ray]

Yes, it would process 20 times. The function code is your code, if you call it, it will execute. Assigning the function to a local variable will be more efficient than calling it 20 times.