BOOL2 is bollinger indicator the data flow: priceSource -> -> calculate SMA -> calculate stdDev -> calculate bandWidth -> get latest SMA -> upBand, downBand.

Cross creates the CrossStream object: cross := Cross(fastEWMA, slowEWMA).

KLines creates a KLine stream that pushes the klines to the subscribers.

Stochastic Oscillator.

Subtract creates the SubtractStream object subtract := Subtract(longEWMA, shortEWMA).

CrossStream subscribes 2 upstreams, and calculate the cross signal.

go:generate callbackgen -type KLineStream.

go:generate callbackgen -type StochStream.

SubtractStream subscribes 2 upstream data, and then subtract these 2 values.

This TRStream calculates the ATR first.