Trait Dequeue 

pub trait Dequeue {
    type Key;
    type Value;
    type Error;

    // Required methods
    fn mutate_values<F: FnMut(Self::Value) -> Self::Value>(f: F);
    fn pop_back() -> Result<Option<Self::Value>, Self::Error>;
    fn pop_front() -> Result<Option<Self::Value>, Self::Error>;
    fn push_back(key: Self::Key, value: Self::Value) -> Result<(), Self::Error>;
    fn push_front(key: Self::Key, value: Self::Value) -> Result<(), Self::Error>;
    fn clear();
}

Represents dequeue implementation.

Required Associated Types

type Key

Dequeue’s elements stored key.

type Value

Dequeue’s elements stored value.

type Error

Dequeue error type.

Required Methods

fn mutate_values<F: FnMut(Self::Value) -> Self::Value>(f: F)

Mutates all stored value with given function.

fn pop_back() -> Result<Option<Self::Value>, Self::Error>

Removes and returns tail value of the dequeue, if present.

fn pop_front() -> Result<Option<Self::Value>, Self::Error>

Removes and returns head value of the dequeue, if present.

fn push_back(key: Self::Key, value: Self::Value) -> Result<(), Self::Error>

Inserts value to the end of dequeue with given key.

fn push_front(key: Self::Key, value: Self::Value) -> Result<(), Self::Error>

Inserts value to the beginning of dequeue with given key.

fn clear()

Removes all values.

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<Key, Value, Error, HVS, TVS, MS, Callbacks> Dequeue 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>>, Callbacks: DequeueCallbacks<Value = Value>,

type Key = Key

type Value = Value

type Error = Error