Yeah, if you have perfect dilligence, you can work around many language's weaknesses. But we're in an imperfect world. It's not easy to influence my coworker's code style and impossible to do with other teams or people who worked on my projects in the past and left since, yet I still have to work with their code.
> then you can pretty much eliminate NPE.
NPEs is only one kind of cost incurred by the lack of null safety. The other is all the unnecessary "if (x == null) {" boilerplate code caused by the uncertainty and defensive programming, which increases complexity and worsens readability.
> then you can pretty much eliminate NPE.
NPEs is only one kind of cost incurred by the lack of null safety. The other is all the unnecessary "if (x == null) {" boilerplate code caused by the uncertainty and defensive programming, which increases complexity and worsens readability.