Struct PersistedState

pub struct PersistedState<T>
where
    T: Clone + Serialize + DeserializeOwned + Default,
{ /* private fields */ }

Container that holds some state value that is persisted to disk.

Implementations

impl<T> PersistedState<T>

where T: Clone + Serialize + DeserializeOwned + Default,

pub fn new(path: PathBuf) -> PersistedState<T>

Creates a new state container that persists to the given path.

pub fn new_with_mode(path: PathBuf, mode: u32) -> PersistedState<T>

Creates a new state container that persists to the given path.

pub fn load(&self) -> T

Loads persisted state.

pub fn save(&self, state: T) -> Result<(), WrappedError>

Saves persisted state.

pub fn update<R>( &self, mutator: impl FnOnce(&mut T) -> R, ) -> Result<R, WrappedError>

Mutates persisted state.

Trait Implementations

impl<T> Clone for PersistedState<T>

where T: Clone + Serialize + DeserializeOwned + Default + Clone,

fn clone(&self) -> PersistedState<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.