Memo<T> class

Memoization sugar.

Only re-evaluates builder when dependency returns a value that differs (!=) from the previous execution. Prevents expensive subtree re-evaluations when unrelated signals update.

DOM Representation

Mounts between sentinel comments <!-- bloom:memo --> and <!-- /bloom:memo -->.

final activeUserId = signal('user-1');

BloomNode userProfileView() => Div(
  children: [
    Memo(
      () => activeUserId.value,
      (id) => Div(
        className: 'profile-card',
        text: 'Loaded profile for: $id',
      ),
    ),
  ],
);

Inheritance

• Object
• BloomNode
• MemoNode<T>
• Memo

Constructors

Memo(T dependency(), BloomNode builder(T value))

Creates a memoized boundary descriptor with dependency and builder.

const

Properties

builder → BloomNode Function(T value)

Builder that produces a descriptor tree from the evaluated dependency value.

final, inherited

builderErased → BloomNode Function(Object? value)

builder, accepting an untyped Object? dependency value.

no setter, inherited

dependency → T Function()

Reactive computation returning the dependency value of type T.

final, inherited

dependencyErased → Object? Function()

dependency, viewed untyped as Object? Function().

no setter, inherited

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited