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MemoryStorage

Struct MemoryStorage 

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pub struct MemoryStorage { /* private fields */ }
Expand description

In-memory storage backend for testing and ephemeral state.

State is lost when the process exits. Useful for:

  • Unit testing widget persistence logic
  • Applications that don’t need cross-session persistence
  • Development/debugging without file I/O

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impl MemoryStorage

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pub fn new() -> Self

Create a new empty memory storage.

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pub fn with_entries(entries: HashMap<String, StoredEntry>) -> Self

Create memory storage pre-populated with entries.

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impl Debug for MemoryStorage

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for MemoryStorage

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fn default() -> MemoryStorage

Returns the “default value” for a type. Read more
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impl StorageBackend for MemoryStorage

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fn name(&self) -> &str

Human-readable name for logging.
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fn load_all(&self) -> StorageResult<HashMap<String, StoredEntry>>

Load all stored state entries. Read more
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fn save_all(&self, entries: &HashMap<String, StoredEntry>) -> StorageResult<()>

Save all state entries atomically. Read more
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fn clear(&self) -> StorageResult<()>

Clear all stored state.
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fn is_available(&self) -> bool

Check if the backend is available and functional.

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Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more