Hacker News new | past | comments | ask | show | jobs | submit login

Option is a takeoff of the Null Object pattern.

Option(null).map(str => str + "!").foreach(str => println(str)) is a noop.




Yeah, the Null Object Pattern is just optionals except you have to re-implement it each you need optional semantics.


No. They're opposites.

"...an object which implements the expected interface, but whose method body is empty. "

https://en.wikipedia.org/wiki/Null_Object_pattern




Guidelines | FAQ | Support | API | Security | Lists | Bookmarklet | Legal | Apply to YC | Contact

Search: