Thinking in Pine - Functions Containing Var Variables

increment()=>
    var i = 0
    i+=1

var1 = increment()
var2 = increment()
var3 = increment()

// The code above is equivalent to
// var i1 = 0
// i1+=1
// var1 = i1

// var i2 = 0
// i2+=1
// var2 = i2

// var i3 = 0
// i3+=1
// var3 = i3

plot(var1, "Counter 1", color=color.blue)
plot(var2, "Counter 2", color=color.red)
plot(var3, "Counter 3", color=color.purple)

arr = array.from(var1, var2, var3)
for i=1 to 3
    arr.push(increment())
    // The code above is equivalent to
    // var i4 = 0
    // i4+=1
    // arr.push(i4)

if(bar_index == 4)
    log.info('Value of array containing incremental values : {0}', arr)