Trait gear_common::storage::Counted

pub trait Counted {
    type Length: Default + PartialEq;

    // Required method
    fn len() -> Self::Length;

    // Provided method
    fn is_empty() -> bool { ... }
}

Represents default counting logic, by providing ability to return length of the object as specified (associated) type or answer the question is the object empty.

Required Associated Types

type Length: Default + PartialEq

Returning length type.

Required Methods

fn len() -> Self::Length

Returns current Self’s amount of elements as Length type.

Provided Methods

fn is_empty() -> bool

Returns bool, defining if Self doesn’t contain elements.

Object Safety

This trait is not object safe.

Implementors

impl<Key, Value, Error, HVS, TVS, MS, Callbacks> Counted for DequeueImpl<Key, Value, Error, HVS, TVS, MS, Callbacks>

where Key: Clone + PartialEq, Error: DequeueError, HVS: ValueStorage<Value = Key>, TVS: ValueStorage<Value = Key>, MS: MapStorage<Key = Key, Value = LinkedNode<Key, Value>> + Counted, Callbacks: DequeueCallbacks<Value = Value>,

type Length = <MS as Counted>::Length

impl<T, OutputError, KeyGen> Counted for QueueImpl<T, OutputError, KeyGen>

where T: Dequeue + Counted, OutputError: From<T::Error>, KeyGen: KeyFor<Key = T::Key, Value = T::Value>,

type Length = <T as Counted>::Length

impl<T: AuxiliaryStorageWrap> Counted for T

type Length = usize