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Tuple4OptionOps<T1, T2, T3, T4>

extension Tuple4OptionOps<T1, T2, T3, T4> on Record

Provides additional functions on a tuple of 4 Options.

Properties

tupled extension no setter

Option<Record> get tupled

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

Available on Record, provided by the Tuple4OptionOps<T1, T2, T3, T4> extension

Implementation
dart
Option<(T1, T2, T3, T4)> get tupled => init.tupled.flatMap((x) => last.map(x.appended));

Methods

mapN() extension

Option<T5> mapN<T5>(T5 Function(T1, T2, T3, T4) fn)

Applies fn to the values of each respective tuple member if all values are a Some. If any item is a None, None will be returned.

Available on Record, provided by the Tuple4OptionOps<T1, T2, T3, T4> extension

Implementation
dart
Option<T5> mapN<T5>(Function4<T1, T2, T3, T4, T5> fn) => tupled.map(fn.tupled);