Optional.or() doesn't use a wildcard in its signature (original) (raw)

Stefan Zobel spliterator at gmail.com
Sat Oct 31 18:21:22 UTC 2015


2015-10-31 19:11 GMT+01:00 Remi Forax <forax at univ-mlv.fr>:

Hi all, hi Paul,

I've just seen that Optional.or is declared as public Optional or(Supplier<Optional> supplier) { instead of public Optional or(Supplier<? extends Optional> supplier) { regards, Rémi

I don't get it. Optional is final anyway. Can you explain?

Thanks, Stefan



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