fn new(name: impl Into<String>) -> Self

fn add(&mut self, item: TodoItem) -> ()

fn get(&self, id: &str) -> Option<&TodoItem>

fn get_mut(&mut self, id: &str) -> Option<&mut TodoItem>

fn remove(&mut self, id: &str) -> Option<TodoItem>

fn pending(&self) -> Vec<&TodoItem>

fn completed(&self) -> Vec<&TodoItem>

fn overdue(&self) -> Vec<&TodoItem>

fn by_tag(&self, tag: &str) -> Vec<&TodoItem>

fn by_priority(&self, priority: TodoPriority) -> Vec<&TodoItem>

fn len(&self) -> usize

fn is_empty(&self) -> bool

fn progress(&self) -> f64