functional library

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.
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.

EitherFailure<T> = Either<Failure, T>: A type alias for an Either that has Failure as its Left type and T as its Right type.
FutureEither<T> = Future<Either<Failure, T>>: A type alias for a Future that completes with an EitherFailure.
FutureEitherUnit = FutureEither<Unit>: A shorthand for a FutureEither that completes with a Unit result.
GMap = Map<String, dynamic>: A type alias for a Map<String, dynamic> often used for generic JSON-like objects or data payloads.