LazyRef<K, V> class

A lazy-loaded reference to a value.

LazyRef wraps a value that may not be loaded yet. The value is loaded on first access according to the configured strategy.

Constructors

LazyRef(K key, Future<V> fetcher(K key), {Duration? ttl})
Creates a LazyRef.

Properties

hashCode → int
The hash code for this object.
no setterinherited
isExpired → bool
Whether the value has expired based on TTL.
no setter
isLoaded → bool
Whether the value has been loaded.
no setter
key → K
The key for this reference.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
ttl → Duration?
TTL for the cached value.
final
value → V?
The current value, or null if not loaded.
no setter

Methods

get() → Future<V>
Gets the value, loading it if necessary.
invalidate() → void
Invalidates the cached value, forcing a reload on next access.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
reload() → Future<V>
Forces a reload of the value.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited