Diagnostics
T426
invalid lambda position or body
T426
A lambda exists only as the lambda argument of map, filter, or reduce, and its body is one expression without braces. Move the expression into the higher-order call, remove body braces, or declare a named function for reusable logic.
Failing example
script "conf"
data chart = subscribe(data.ohlcv)
on chart.update {
let double = |x| x * 2.0
}Corrected example
script "fixed"
data chart = subscribe(data.ohlcv)
state xs: float[] = float[](4)
on chart.update {
let doubled = xs.map(|x| x * 2.0)
let first = doubled.get(0)
}