getBarStateSymbol() vs rawtime()

[Dave180]

To detect a new bar (BARSTATE_NEWBAR) in a different series (to the chart), ie "xSeries=sym("symbol,interval")", the proper siolution would seem to be use getBarStateSymbol("symbol,interval");, not getBarStateSymbol(xSeries); note, and test against BARSTATE_NEWBAR.

But a quick timing check seems to indicate that testing "rawtime(0,xSeries) != mtLastRT" performs almost three times as fast and on my machine saves almost .1ms per iteration.
As far as I can tell this will do the same job. Anyone got better info or see a flaw?

[Guest]

Hi Dave,

You could try something similar like this. It may be a bit quicker...

//~ inside a bInit Statement or equivalent...
if(!bInit){
 var xSeries=sym("symbol,interval");
 var rawtimeX = rawtime(xSeries);
 rawTS=getSeries(rawtimeX); //~ global variable
 bInit=true;
}
//~ then... 
mtRT=rawTS.getValue(0);
if(mtRT!==mtLastRT){
 mtLastRT=mtRT;
 //~ etc....
} 

[Dave180]

Steve, thanks, I did write a longer reply touching on this curious getSeries() function I've never properly understood, but I seem to have lost it, may start again another time.