Re:JDK 8 Release Notes
by noelwelsh on Wednesday March 19, 2014 @04:31AM
(#7427353)
map / getOrElse is standard in all the Scala code I've seen. Abstracting over the monad is also a pretty big win that has made some big refactorings painless for me. Pattern matching is really only used by beginners IME.
[ Parent
| on HN ]
Well, then maybe the beginners do it right? You have not argued against my two points: It's much slower, and less clear.
Clarity comes from familiarity. It's not an objective measure.
The speed benefit is well known, as is the corollary, premature optimisation. I expect checking for null is even faster if speed is the main concern. It's an engineering tradeoff, just like making the abstraction to a monad (or monad plus). In the normal course of events I'm more concerned about flexibility than performance and would prefer the abstraction.