Lazy<T> class

A class that provides lazy initialization for a value of type T. The value is created by a factory function the first time it is needed. Optionally, the value can expire based on a duration or a custom condition, which will trigger the recreation of the value upon the next access.

Constructors

Lazy({required T factory(), void onCreate(T instance)?, Duration? expiryDuration, bool shouldExpire(T instance)?, void onDestroy(T instance)?})
Constructs an instance of Lazy<T> with the required factory function and optional callbacks for creation, expiry, and destruction of the value.

Properties

hashCode → int
The hash code for this object.
no setterinherited
isInitialized → bool
Returns true if the value has been initialized, otherwise false.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value → T
Returns the current value, creating it if necessary. If the value is determined to be expired either by time or a custom condition, it is recreated. This check happens each time the value is accessed.
no setter

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
reset() → void
Resets the value, causing it to be re-created upon next access. If a destruction callback is provided, it is invoked with the current value before resetting.
toString() → String
A string representation of this object.
inherited

Operators

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