Result<S, F extends Exception> class
sealed
A value that represents either a success or a failure, including an associated value in each case.
Constructors
- Result()
Properties
- failure → F
-
Returns a new value of Failure result.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- isFailure → bool
-
Returns true if Result is Failure.
no setter
- isSuccess → bool
-
Returns true if Result is Success.
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- success → S
-
Returns a new value of Success result.
no setter
Methods
-
flatMap<
U, E extends Exception> (Result< U, F> transform(S)) → Result<U, F> - Maps a Result<S, F> to Result<U, F> by applying a function to a contained Success value and unwrapping the produced result, leaving an Failure value untouched.
-
flatMapError<
V, E extends Exception> (Result< S, E> transform(F)) → Result<S, E> - Maps a Result<S, F> to Result<S, E> by applying a function to a contained Failure value, leaving an Success value untouched.
-
map<
U, E extends Exception> (U transform(S)) → Result< U, F> - Maps a Result<S, F> to Result<U, F> by applying a function to a contained Success value, leaving an Failure value untouched. This function can be used to compose the results of two functions.
-
mapError<
V, E extends Exception> (E transform(F)) → Result< S, E> - Maps a Result<S, F> to Result<S, E> by applying a function to a contained Failure value, leaving an Success value untouched.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
result(
Completion< S> success, Completion<F> failure) → void - Returns a new value of Result from closure either a success or a failure.
-
toString(
) → String -
A string representation of this object.
inherited
-
unwrap(
) → S - Unwraps the Result and returns the Success value.
-
unwrapOr<
T> (T initial) → S -
Unwraps the Result and returns the Success value.
If the result is a Success, returns the success value.
If the result is a Failure, returns the provided
initialvalue as a Success. -
unwrapOrElse<
T extends Object> (T t, S operation(T)) → S -
Unwraps the Result and returns the Success value.
If the result is a Success, returns the success value.
If the result is a Failure, returns the provided
initialvalue as a Success.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited