functional.dart

functional library

Re-exports functional programming primitives from gmana_functional.

Classes

Either<L, R>: A generic type that represents a value of one of two possible types (a disjoint union).
Failure: Represents a failure in an operation, usually as the Left value of an Either.
Left<L, R>: Represents the failure or error side of an Either.
NoParams: A class that represents a lack of parameters.
Right<L, R>: A concrete implementation of Either that represents the successful value (Right) in a computation.
StreamUseCase<SuccessType, Params>: A contract for defining streaming use cases.
Unit: Represents a void-like value in functional programming.
UseCase<SuccessType, Params>: A contract for defining use cases (application business logic) in a clean architecture approach.

unit → const Unit: A singleton instance representing a unit of work with no meaningful value.

FutureResult<T> = Future<Result<T>>: A future that completes with a fallible Result.
FutureResultUnit = FutureResult<Unit>: A FutureResult for operations that return no meaningful success value.
Result<T> = Either<Failure, T>: A standard fallible result with Failure on the left and T on the right.
ResultUnit = Result<Unit>: A Result for operations that return no meaningful success value.
StreamResult<T> = Stream<Result<T>>: A stream that emits fallible Result values.
StreamResultUnit = StreamResult<Unit>: A StreamResult for streams that emit no meaningful success value.