personal version of lib.rs/anymap for fun and profit

anymap.rs

#[derive(Debug, Default)]
struct AnyMap {
    map: HashMap<TypeId, Box<dyn Any>>,
}

impl AnyMap {
    fn new() -> Self {
        Default::default()
    }

    // TODO: error handling
    fn insert<T: 'static>(&mut self, value: T) {
        let typeid = TypeId::of::<T>();

        self.map.entry(typeid).or_insert(Box::new(value));
    }

    fn get<T: 'static>(&self) -> Option<&T> {
        let typeid = TypeId::of::<T>();

        self.map.get(&typeid)?.downcast_ref()
    }

    fn get_mut<T: 'static>(&mut self) -> Option<&mut T> {
        let typeid = TypeId::of::<T>();

        self.map.get_mut(&typeid)?.downcast_mut()
    }

    fn remove<T: 'static>(&mut self) {
        let typeid = TypeId::of::<T>();

        self.map.remove(&typeid);
    }
}