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Tuple3EitherOps<E, T1, T2, T3>

extension Tuple3EitherOps<E, T1, T2, T3> on Record

Provides additional functions on tuple with 3 Eithers.

Properties

tupled extension no setter

Either<E, Record> get tupled

If all items of this tuple are a Right, the respective items are turned into a tuple and returned as a Right. If any item is a Left, the first Left encountered is returned.

Available on Record, provided by the Tuple3EitherOps<E, T1, T2, T3> extension

Implementation
dart
Either<E, (T1, T2, T3)> get tupled => init.tupled.flatMap((x) => last.map(x.appended));

Methods

mapN() extension

Either<E, T4> mapN<T4>(T4 Function(T1, T2, T3) fn)

Applies fn to the values of each respective tuple member if all values are a Right. If any item is a Left, the first Left encountered will be returned.

Available on Record, provided by the Tuple3EitherOps<E, T1, T2, T3> extension

Implementation
dart
Either<E, T4> mapN<T4>(Function3<T1, T2, T3, T4> fn) => tupled.map(fn.tupled);