Optional.orElse(null) ambiguity

[Tim Peierls]

On Mon, Jan 14, 2013 at 1:23 PM, Brian Goetz <brian.goetz at oracle.com> wrote:

> Null is a valid value for orElse(T) but not for orElse(Supplier).  So we
> care about this ambiguity (there are other similar ones we don't care
> about, when null isn't a valid value for either option.)
>

Guava Optional has or(T), or(Supplier<? extends T>), and orNull() where
null is not an acceptable argument value for either of the first two.

That has worked well for me in practice, but it would be hard on folks who
insist on being able to stick null everywhere.

--tim
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.openjdk.java.net/pipermail/lambda-libs-spec-experts/attachments/20130114/f4869665/attachment.html