Added #

• lemunozm: added isSome(), isNone() to Option.
• lemunozm: added isOk(), isErr() to Result.
• lemunozm: added Option.from() and Option.toNullable() to make easy conversions with nullable values.
• Added a Unit type that is similar to Rust's () type.

Changed #

• lemunozm: return values added to match(), when() in Result, Option.

Changed #

• BREAKING CHANGE: migrated to null safety and Dart SDK 2.12.

Added #

• Add fold() function on Result that combines map() and mapErr().

Changed #

• Fix the package description and code formatting.

Changed #

• BREAKING CHANGES: see below for the details.
• The Result "ok" and "error" values are full-fledged classes now.
• The Option "some" and "none" values are full-fledged classes now.
• Option.isSome() and Option.isNone() are gone, use is Some and is None.
• Result.isOk() and Result.isErr() are gone, use is Ok and is Err.
• The default Result constructor has been renamed to of() instead.
• Passing null to the Option.some() factory constructor will yield a None.
• Both the Ok and Err subclasses of Result allow for null arguments.

Added #

• Borrowing from simple_result, added when() as an alternative to match().

Changed #

• BREAKING CHANGE: the various is methods are now getters.
• Extend Equatable in both Option and Result.
• Override the equals operator (==) in both Option and Result.

Added #

• Initial version