iTime function in EA make different results

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if(CheckValueTime==iTime(NULL,TimeFrame,0)) return(0);

else CheckValueTime = iTime(NULL,TimeFrame,0);

I got this code from other forum and I have this code in my ea too.

And I got a different results between with and with out this code.

With this code it's can run optimization faster than without.

I am not sure with or without this code that make EA realistic.

Please anyone suggest to me or if anyone has a better like this code I would be appreciate.

[Keith Watford]

That code means that any code that follows will only be executed if a new bar opens in the stipulated timeframe.

Obviously a lot quicker than when the full code executes every tick. 

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Thank you GumRai.

I got a best result in backtest but bad results in demo.

You make me understand my EA better.

Thank you again.

[Keith Watford]

Many strategies, such as MA crosses or stochastic/RSI crossing certain levels are coded to only execute when a bar closes (ie new bar opens).

This is to avoid (what some people consider) false signals when a cross happens while the bar is still open, but crosses back before the bar has closed.

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I wonder why "CheckValueTime" variable remember previous value instant of  reset to zero when EA execute again.

I just declare in normal variable not global variable.

[Keith Watford]

prothemeus:

I wonder why "CheckValueTime" variable remember previous value instant of  reset to zero when EA execute again.

I just declare in normal variable not global variable.

If the variable is declared locally and not static, it will not be remembered and the code will not be effective.