AsyncValue<T> class

AsyncValue<T> class sealed

Result of an async operation tracked by useFuture.

This is a sealed class similar to AsyncSnapshot with four possible states:

Unlike AsyncSnapshot, this is a sealed class that enables exhaustive pattern matching.

Implementers

Constructors

AsyncValue.data(T data): Creates a data state with the result.
const

factory
AsyncValue.error(Object error, [StackTrace? stackTrace]): Creates an error state.
const

factory
AsyncValue.idle(): Creates an idle state (no connection).
const

factory
AsyncValue.loading(): Creates a loading state (waiting).
const

factory

dataOrNull → T?: Returns the data if available, null otherwise.
no setter
errorOrNull → Object?: Returns the error if available, null otherwise.
no setter
hasData → bool: Whether there is data or error available.
no setter
hashCode → int: The hash code for this object.
no setterinherited
isData → bool: Whether the operation completed successfully (ConnectionState.done with data).
no setter
isError → bool: Whether the operation failed (has error).
no setter
isIdle → bool: Whether the operation hasn't started yet.
no setter
isLoading → bool: Whether the operation is in progress (ConnectionState.waiting).
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
stackTraceOrNull → StackTrace?: Returns the stack trace if available, null otherwise.
no setter

noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited