optional

Aug 11, 2020

Changes in this version

+ var ErrorNoValuePresent = errors.New("no value present")

+ type EmptyConsumer interface

+ Run func()

+ type Optional struct

+ func Empty() Optional

+ func Of(value interface{}) Optional

+ func OfNillable(value interface{}) Optional

+ func (o *Optional) FlatMap(mapper func(interface{}) interface{}) Optional

+ func (o Optional) Filter(predicate predicate.Predicater) Optional

+ func (o Optional) Get() interface{}

+ func (o Optional) IfPresent(action consumer.Consumer)

+ func (o Optional) IfPresentOrElse(action consumer.Consumer, emptyAction EmptyConsumer)

+ func (o Optional) IsPresent() bool

+ func (o Optional) Map(mapper func(interface{}) interface{}) Optional