Trait AccessCount 

pub trait AccessCount {
    // Required methods
    fn writers(type_id: TypeId) -> usize;
    fn readers(type_id: TypeId) -> usize;
    fn exclusive_readers(type_id: TypeId) -> usize;
}

Internal helper to query how a cons-lists of StoreRequest types will use a specific type.

Required Methods

fn writers(type_id: TypeId) -> usize

Returns how many writers for the given type exist in this list.

fn readers(type_id: TypeId) -> usize

Returns how many readers for the given type exist in this list (both exclusive and non-exclusive).

fn exclusive_readers(type_id: TypeId) -> usize

Returns how many exclusive readers for the given type exist in this list.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl AccessCount for Nil

impl<T, U> AccessCount for Cons<T, U>

where T: AccessKind, U: AccessCount,