Yet another "how to pass multiple parameters to a function" post

[lmiq]

@Boris

@with_kw struct hypChan2020
    c1::Float64 = 0.04; # hyperparameter on own lags
    c2::Float64 = 0.01; # hyperparameter on other lags
    c3::Float64 = 100;  # hyperparameter on the constant
end

This should be inside your module, and the name of the struct should be public, probably exported. The user must create one instance of that struct, and pass it to the function.

In the example you are passing the type.

The function can or cannot set a default value for the parameters, with options::hypChan2020=hypChan2020() as a keyword or optional positional argument.

(This alternative is what I described here: How to allow users to safely change package "constants"? - #6 by lmiq)