Type Alias CustomStatus 

pub type CustomStatus<'a, F, const N: usize> = Box<dyn FnMut(usize, F, F, [F; N], F, [F; N]) + 'a>;

Custom status function

See why it’s a Box here.

See the print method for the signature explanation.

Aliased Type

pub struct CustomStatus<'a, F, const N: usize>(/* private fields */);