plain_optional 1.0.0

An implementation of a type `Optional<T>` in Dart, similar to the standard one in Swift.

1.0.0

• Promoting v1.0.0-nullsafety.0 to a release

1.0.0-nullsafety.0

• Make null-safe

0.1.3

• Fix map, flatMap, hashCode.

0.1.2

• Add unsafe getter.

0.1.1+1

• Update the package description.

0.1.1

• Add two- and three-argument map and flat-map functions.

0.1.0

• A basic implementation of Optional<T> in Dart.