debugPinescript

debugPinescript.pinescript

//@version=5
indicator("Var Understanding", overlay=true)

myFunction() =>
    var int counter = 0  // Initialized once per bar
    counter := counter + 1
    counter

// Scenario 1
// On the same bar, multiple calls will reset the var
int a = 0
a := myFunction()  // First call on this bar: counter starts at 0, returns 1
a := myFunction()  // Second call on this bar: counter starts at 0 again, returns 1
a := myFunction()  // Third call on this bar: counter starts at 0 again, returns 1

// The var will retain its value across different bars
plot(a, color=color.red)
plot(a, color=color.blue)
plot(a, color=color.green)

buySignalTypes = array.from("ATR_CROSS", "RSI", "STOCHASTIC")

// Scenario 2
// Test each combination of buy and sell signals
int x = 0
for buyType in buySignalTypes
    x := myFunction()

plot(x, color=color.yellow)

// The var keyword in Pine Script retains values across bars, NOT across multiple function calls.
// If the function calls are within a lopp then var variables are not reinitialized. It is only reinitialised if the functions are called explicitly by adding a new line