Mirror<T> class abstract

A generic result container that holds either a success value of type T or an error.

Use MirrorSuccess for successful results, and MirrorFailure for failures.

This class provides convenient methods to work with asynchronous or synchronous operations that can either succeed or fail, without using exceptions.

Example usage:

Mirror<int> success = MirrorSuccess(42);
Mirror<int> failure = MirrorFailure('Error occurred');

success.fold(
  onSuccess: (value) => print('Success: $value'),
  onFailure: (error) => print('Failure: $error'),
);

failure.fold(
  onSuccess: (value) => print('Success: $value'),
  onFailure: (error) => print('Failure: $error'),
);
Implementers

Constructors

Mirror.new()
const

Properties

errorOrNull → Object?
Returns the error or null if this is a success.
no setter
hashCode → int
The hash code for this object.
no setterinherited
isFailure → bool
Returns true if this instance represents a failure.
no setter
isSuccess → bool
Returns true if this instance represents a successful result.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
valueOrNull → T?
Returns the success value or null if this is a failure.
no setter

Methods

delay(Duration duration) → Future<Mirror<T>>
Returns a Future that completes with this Mirror after a delay of duration.
fold<R>({required R onFailure(Object error), required R onSuccess(T value)}) → R
Applies onSuccess if this is a success, or onFailure if this is a failure, returning a value of type R.
map<R>(R transform(T value)) → Mirror<R>
Transforms the success value using transform, or returns the failure unchanged.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
onFailureDo(void fn(Object error)) → void
Executes the provided fn callback if this is a failure.
onSuccessDo(void fn(T value)) → void
Executes the provided fn callback if this is a success.
recover(T recoverFn(Object error)) → Mirror<T>
Recovers from failure by transforming the error into a success value using recoverFn.
toString() → String
A string representation of this object.
inherited

Operators

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