option library

Extension Types

Option

Option represents the union of two types - Some<T> and None. As an extension type of T?, Option<T> has the same runtime cost of T? with the advantage of being able to chain null specific operations.

Some

Represents a value that is present. The erasure of this is T.

Extensions

FutureOptionExtension on FutureOption<T>

FutureOption represents an asynchronous Option. And as such, inherits all of Option's methods.

FutureOptionOptionExtension on FutureOption<Option<T>>

FutureOptionRecord2Extension on FutureOption<(T, U)>

FutureOptionResultExtension on FutureOption<Result<S?, F>>

FutureToOption on Future<T?>

NoneMethodsExtension on _None

OptionMethodsExtension on Option<T>

OptionNestedRecord3Extension on Option<((A, B), C)>

OptionNestedRecord4Extension on Option<(((A, B), C), D)>

OptionNestedRecord5Extension on Option<((((A, B), C), D), E)>

OptionNullableExtension on Option<T?>

OptionOptionExtension on Option<Option<T>>

OptionRecord2Extension on Option<(T, U)>

OptionResultExtension on Option<Result<S?, F>>

OptionToFutureOption on Option<T>

RecordFunctionToOption10 on (Option<A> Function(), Option<B> Function(), Option<C> Function(), Option<D> Function(), Option<E> Function(), Option<F> Function(), Option<G> Function(), Option<H> Function(), Option<I> Function(), Option<J> Function())

RecordFunctionToOption2 on (Option<A> Function(), Option<B> Function())

RecordFunctionToOption3 on (Option<A> Function(), Option<B> Function(), Option<C> Function())

RecordFunctionToOption4 on (Option<A> Function(), Option<B> Function(), Option<C> Function(), Option<D> Function())

RecordFunctionToOption5 on (Option<A> Function(), Option<B> Function(), Option<C> Function(), Option<D> Function(), Option<E> Function())

RecordFunctionToOption6 on (Option<A> Function(), Option<B> Function(), Option<C> Function(), Option<D> Function(), Option<E> Function(), Option<F> Function())

RecordFunctionToOption7 on (Option<A> Function(), Option<B> Function(), Option<C> Function(), Option<D> Function(), Option<E> Function(), Option<F> Function(), Option<G> Function())

RecordFunctionToOption8 on (Option<A> Function(), Option<B> Function(), Option<C> Function(), Option<D> Function(), Option<E> Function(), Option<F> Function(), Option<G> Function(), Option<H> Function())

RecordFunctionToOption9 on (Option<A> Function(), Option<B> Function(), Option<C> Function(), Option<D> Function(), Option<E> Function(), Option<F> Function(), Option<G> Function(), Option<H> Function(), Option<I> Function())

RecordToOption10 on (Option<A>, Option<B>, Option<C>, Option<D>, Option<E>, Option<F>, Option<G>, Option<H>, Option<I>, Option<J>)

RecordToOption2 on (Option<A>, Option<B>)

RecordToOption3 on (Option<A>, Option<B>, Option<C>)

RecordToOption4 on (Option<A>, Option<B>, Option<C>, Option<D>)

RecordToOption5 on (Option<A>, Option<B>, Option<C>, Option<D>, Option<E>)

RecordToOption6 on (Option<A>, Option<B>, Option<C>, Option<D>, Option<E>, Option<F>)

RecordToOption7 on (Option<A>, Option<B>, Option<C>, Option<D>, Option<E>, Option<F>, Option<G>)

RecordToOption8 on (Option<A>, Option<B>, Option<C>, Option<D>, Option<E>, Option<F>, Option<G>, Option<H>)

RecordToOption9 on (Option<A>, Option<B>, Option<C>, Option<D>, Option<E>, Option<F>, Option<G>, Option<H>, Option<I>)

SomeMethodsExtension on Some<T>

Constants

None → const _None

Represents a value that is absent. The erasure of this is null.

Typedefs

FutureOption<T> = Future<Option<T>>

FutureOption represents an asynchronous Option. And as such, inherits all of Option's methods.