- Simple API
- Built-in parameters validation
- Includes thorough documentation
- A wide variety of Oscillators and Overlays.
go get github.com/jellydator/tango
All of the tools must be created using New* function. It performs
parameters validation and returns an object that is capable of working
with data slices.
The main calculations are done using Calc method. The return types varies
based on the tool.
A simple use case could look like this:
func main() {
sma, err := tango.NewSMA(3)
if err != nil {
// handle the error.
}
dataPoints := []decimal.Decimal{
decimal.NewFromInt(2),
decimal.NewFromInt(3),
decimal.NewFromInt(4),
}
// the value is 3
value, err := sma.Calc(dataPoints)
if err != nil {
// handle the error.
}
}For the calculation to be successful, the Calc method should receive only the
information that it requires. In some scenarios, it might not be known how many
data points is needed, for this, a Count method may be used.
func CalculateMA(ma tango.MA, values []decimal.Decimal) (decimal.Decimal, error) {
requiredValues := ma.Count()
if len(values) < requiredValues {
return decimal.Zero, errors.New("invalid count of values")
}
return ma.Calc(values[:requiredValues])
}