Trait StorageDispatcher 

pub trait StorageDispatcher {
    type Storage;

    // Required method
    fn with_storage<T, F>(&mut self, default_value: T, operation: F) -> T
       where F: FnOnce(&mut Self::Storage) -> T;

    // Provided methods
    fn with_storage_result<F>(&mut self, operation: F) -> StorageResult<()>
       where F: FnOnce(&mut Self::Storage) -> StorageResult<()> { ... }
    fn with_storage_value<T, F>(&mut self, operation: F) -> StorageResult<T>
       where F: FnOnce(&mut Self::Storage) -> StorageResult<T>,
             T: Default { ... }
}

Хелпер-трейт для упрощения диспетчеризации

Required Associated Types

type Storage

Required Methods

fn with_storage<T, F>(&mut self, default_value: T, operation: F) -> T

where F: FnOnce(&mut Self::Storage) -> T,

Provided Methods

fn with_storage_result<F>(&mut self, operation: F) -> StorageResult<()>

where F: FnOnce(&mut Self::Storage) -> StorageResult<()>,

fn with_storage_value<T, F>(&mut self, operation: F) -> StorageResult<T>

where F: FnOnce(&mut Self::Storage) -> StorageResult<T>, T: Default,

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 StorageDispatcher for VStorage

type Storage = Box<dyn Storage>

impl<S: Storage> StorageDispatcher for VStorageGeneric<S>

type Storage = S