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Thinking in Pine - Execution Model and Rollback on Realtime Bars

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Hello All,

Welcome to another session of "Thinking in Pine" - short video tutorials on Pine Script.

Before continuing with this video, if you are not familiar with var, varip and regular variables, please watch our previous video - "Thinking in Pine - var, varip and regular variables"


🎲 Today's discussion points
  • How var, varip and regular variable modification code works with historical and real time bar updates.
  • Rollback concept of var variables


🎯 Example Program Used
Pine Script®
// The statements execute on every tick count = 0.0 count+=1 varip varipcount = 0 //executes only once on the first bar varipcount+=1 // Reset counter on every bar // if(barstate.isconfirmed) // varipcount:=0 // Rollbacks and assigns on every tick var varcount = 0.0 //executes only once on the first bar varcount+=1 // varcount:=varcount[1] -- Rollback // varcount := varcount + 1 -- execute again plot(varipcount, 'Varip Count') plot(varcount, 'Var Count') plot(count, 'Çount') arrRegular = array.new<float>() var arrVar = array.new<float>() varip arrVarip = array.new<float>() if(bar_index >= last_bar_index -5) arrRegular.push(close) arrVar.push(close) arrVarip.push(close) log.info('Regular : {0}', arrRegular) log.info('Var : {0}', arrVar) log.info('Varip : {0}', arrVarip)


🎲 References
Pine Script® User Manual - Execution Model

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