39 pub struct Shelf(HashMap<TypeId, Box<dyn Any + Send>>);  struct
41 impl Shelf {  impl
93     hi_prio_req: VecDeque<Box<dyn FnOnce(&mut Shelf) + Send>>,
94     lo_prio_req: VecDeque<Box<dyn FnOnce(&mut Shelf) + Send>>,
95     idle_fns: Vec<Arc<dyn Fn(&mut Shelf) + Send + Sync>>,
98     shelf: Option<Shelf>,
140         F: for<'r> FnOnce(&'r mut Shelf) + Send + 'static,  in queue_hi()
151         F: FnOnce(&mut Shelf) + Send + 'static,  in queue_lo()
160         F: Fn(&mut Shelf) + Send + Sync + 'static,  in add_idle()
169         F: for<'r> FnOnce(&'r mut Shelf) + Send + 'static,  in queue()
199                 QueuedFn(Box<dyn FnOnce(&mut Shelf) + Send>),  in spawn_thread()
200                 IdleFns(Vec<Arc<dyn Fn(&mut Shelf) + Send + Sync>>),  in spawn_thread()
262     use super::{AsyncTask, Shelf};
271         let mut shelf = Shelf::default();  in test_shelf()