AsyncSnapshot<T> class

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

See also:

Annotations
  • @immutable

Constructors

AsyncSnapshot.nothing()
Creates an AsyncSnapshot in ConnectionState.none 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)
Creates an AsyncSnapshot in the specified state and with the specified error.
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. [...]
read-only
hasError → bool
Returns whether this snapshot contains a non-null error value. [...]
read-only
hashCode → int
The hash code for this object. [...]
read-only, override
requireData → T
Returns latest data received, failing if there is no data. [...]
read-only
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited

Methods

inState(ConnectionState state) → AsyncSnapshot<T>
Returns a snapshot like this one, but in the specified state. [...]
toString() → String
Returns a string representation of this object.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited

Operators

operator ==(dynamic other) → bool
The equality operator. [...]
override