P006
`while` is not supported
Severity Error
Flowscope Script only has bounded loops, so that every handler call is guaranteed to finish within the step budget. A while loop could run an unknown number of times and is therefore not part of the language.
Rewrite the loop as for i in 0..n { } over a known range, or as for x in xs { } over a collection.
Failing example
script "Five-bar volume"
data chart = subscribe(data.ohlcv)
plot vol5 = plot.histogram(title: "Volume, last 5 bars")
state acc: float = 0.0
state i: int = 0
on chart.close {
acc = 0.0
i = 0
while i < 5 {
acc += chart.volume[i] ?? 0.0
i += 1
}
vol5.plot(acc)
}Fixed example
script "Five-bar volume"
data chart = subscribe(data.ohlcv)
plot vol5 = plot.histogram(title: "Volume, last 5 bars")
state acc: float = 0.0
on chart.close {
acc = 0.0
for i in 0..5 {
acc += chart.volume[i] ?? 0.0
}
vol5.plot(acc)
}