AsyncSnapshot<T> class

Immutable representation of the most recent interaction with an asynchronous computation.

Constructors

AsyncSnapshot.nothing()

Creates an AsyncSnapshot in ConnectionState.none with null data and error.

const

AsyncSnapshot.waiting()

Creates an AsyncSnapshot in ConnectionState.waiting with null data and error.

const

AsyncSnapshot.withData(ConnectionState state, T data)

Creates an AsyncSnapshot in the specified state and with the specified data.

const

AsyncSnapshot.withError(ConnectionState state, Object error, [StackTrace? stackTrace])

Creates an AsyncSnapshot in the specified state with the specified error and optional stackTrace.

const

Properties

connectionState → ConnectionState

Current state of connection to the asynchronous computation.

final

data → T?

The latest data received by the asynchronous computation.

final

error → Object?

The latest error object received by the asynchronous computation.

final

hasData → bool

Returns whether this snapshot contains a non-null data value.

no setter

hasError → bool

Returns whether this snapshot contains a non-null error value.

no setter

hashCode → int

The hash code for this object.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

stackTrace → StackTrace?

The latest stack trace object received by the asynchronous computation.

final

Methods

inState(ConnectionState state) → AsyncSnapshot<T>

Returns a snapshot like this one, but in the specified state.

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