AsyncError<T> class final

The error variant for an AsyncValue.

To be in this state, a Future or Stream emitted an error event.

Inheritance
Available extensions
Annotations
  • @immutable

Constructors

AsyncError.new(Object error, StackTrace stackTrace, Option<T> previousData)
Creates an AsyncError with the supplied error, stackTrace, and previousData.
const

Properties

data → Option<T>

Available on AsyncValue<T>, provided by the AsyncValueConvenience extension

Returns any data contained within this AsyncValue, including previousData for the AsyncLoading and AsyncError cases.
no setter
error → Object
The emitted error associated with this AsyncError.
final
hashCode → int
The hash code for this object.
no setteroverride
previousData → Option<T>
The previous data (from a predecessor AsyncData), if it exists. This can happen if a new Future/Stream is watched and the Future/Stream it is replacing was in the AsyncData state.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
stackTrace → StackTrace
The StackTrace corresponding with the error.
final

Methods

dataOr(T defaultValue) → T

Available on AsyncValue<T>, provided by the AsyncValueConvenience extension

Returns any data contained within this AsyncValue, including previousData for the AsyncLoading and AsyncError cases.
dataOrElse(T defaultFn()) → T

Available on AsyncValue<T>, provided by the AsyncValueConvenience extension

Returns any data contained within this AsyncValue, including previousData for the AsyncLoading and AsyncError cases.
fillInPreviousData(Option<T> newPreviousData) → AsyncValue<T>

Available on AsyncValue<T>, provided by the AsyncValueConvenience extension

Fills in the AsyncLoading.previousData or AsyncError.previousData with newPreviousData if AsyncLoading.previousData or AsyncError.previousData are None. If AsyncLoading.previousData or AsyncError.previousData are Some, then newPreviousData will not be filled in.
map<R>(R mapper(T)) → AsyncValue<R>

Available on AsyncValue<T>, provided by the AsyncValueConvenience extension

Maps an AsyncValue
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
override
unwrapOr(T defaultValue) → T

Available on AsyncValue<T>, provided by the AsyncValueConvenience extension

Returns AsyncData.data if this is an AsyncData. Otherwise, returns defaultValue.
unwrapOrElse(T defaultFn()) → T

Available on AsyncValue<T>, provided by the AsyncValueConvenience extension

Returns AsyncData.data if this is an AsyncData. Otherwise, calls and returns the result of defaultFn.
withoutPreviousData() → AsyncValue<T>

Available on AsyncValue<T>, provided by the AsyncValueConvenience extension

Fills in the AsyncLoading.previousData or AsyncError.previousData with None so that there is no previous data whatsoever in the AsyncValue. This also means that data will only be Some when this is AsyncData, which can be useful when you want to erase any non-relevant previous data.

Operators

operator ==(Object other) → bool
The equality operator.
override