Re:Java 8’s new Optional type doesn't solve anything
by Manishearth on Monday October 26, 2015 @11:56AM
(#10452232)
The difference is that Optional itself can be null, and in Java everything can be null.
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Re:Java 8’s new Optional type doesn't solve anything
by peeters on Monday October 26, 2015 @12:08PM
(#10452304)
It can be, and it's annoying, but that's still a step forward. It's trivial for a good static checker to treat all Optional references as if they were annotated with your favorite @Nonnull annotation.
Re:Java 8’s new Optional type doesn't solve anything
by krisdol on Monday October 26, 2015 @05:59PM
(#10454790)
But in Java you'd never use a library that calls System.exit when it reaches an unexpected null
Re:Java 8’s new Optional type doesn't solve anything
by Manishearth on Monday October 26, 2015 @07:38PM
(#10455257)
See my other comment: https://news.ycombinator.com/item?id=10452408
In Rust you'd rarely write a library that panics on unexpected nulls.
(Also, panic != abort, yada yada)