ConstNullableLazyCell<T> class

A value which is initialized on the first access. Nullable implementation of LazyCell

Equality: Cells are equal if they have the same evaluated value or are unevaluated.

Hash: Cells hash to their evaluated value or hash the same if unevaluated.

Implemented types

• NullableLazyCell<T>

Constructors

ConstNullableLazyCell(T _func(), Object id)

const

Properties

hashCode → int

The hash code for this object.

no setter, override

id → Object

Const objects all share the same canonicalization, meaning instantiation of the same class with the same arguments will be the same instance. Therefore, if you need multiple const versions, an id is needed.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

call() → T

Lazily evaluates the function passed into the constructor.

override

isEvaluated() → bool

Returns true if this has already been called, otherwise false.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override