pub trait UserData: Send {
// Required methods
fn id(&self) -> &str;
fn df(&self) -> &DataFrame;
fn init(&mut self, bars: &[Bar]);
fn update(&mut self, bars: &[Bar]);
}pub trait UserData: Send {
// Required methods
fn id(&self) -> &str;
fn df(&self) -> &DataFrame;
fn init(&mut self, bars: &[Bar]);
fn update(&mut self, bars: &[Bar]);
}