Code: BarsInProgress/BarsRequired

[sandman]

I would appreciate some help to sort out my confusions concerning a section in NT's Help menu (Ninja Script Educational Resources, Tips, MultiTime Frame&Instruments) and would appreciate going step by step rather than all at once.

What is the difference between

if(BarsInProgress != 0)
and
if(BarsInProgress == 0)

What does one do which the other one does not? Or, why/when would I use one and not the other one?

(Am I correct to say that the "0" here refers to the primary data series, the primary Bars Object on which chart I will later load this indicator?)

CurrentBars[0] < BarsRequired
and
CurrentBars[0] <= BarsRequired

What does one do which the other one does not? Or, why/when would I want to use one and not the other one? (And same here concerning the "0" - it refers to the primary BarsObject/Primary Data Series, correct?)

sandman

[NinjaTrader_Joydeep]

Hello sandman,
Thanks for your post.

if(BarsInProgress == 0)  //EQUALS

The above code checks for the primary bar series only.

if(BarsInProgress != 0)  //NOT EQUALS

The following however checks for bar series other than the primary series. Thus say you have 3 bar series (5 minute primary, 1 minute 1st secondary series and 30 minute 2nd secondary series) then the code will filter out (not evaluate) the primary series.

"<" represents the less than while "<=" represents less than equal to.

Please refer to the msdn page which further discusses on various C# operators.

http://msdn.microsoft.com/en-us/library/ms173145.aspx

What you will use will depend on your coding logic.