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>

OptionNullableExtension on Option<T?>

OptionOptionExtension on Option<Option<T>>

OptionRecord2Extension on Option<(T, U)>

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

OptionToFutureOption on Option<T>

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.