cannot find symbol on identity operation in lambda
Talden
talden at gmail.com
Wed Nov 28 00:09:42 PST 2012
On Wed, Nov 28, 2012 at 6:03 PM, Brian Goetz <brian.goetz at oracle.com> wrote:
> The problem is that the type of the stream returned by map() is
> Stream<Integer>, not IntStream.
>
> If you wanted an IntStream, you'd want to explicitly convert to ints:
>
> ...stream().map(i -> (int) i).sum()
>
Would it be correct (and possibly more expressive) to use a method
reference for the unboxing in this case?
...stream().map(Integer::intValue).sum();
(I'm aware you were really illustrating why it didn't resolve to Integer ->
int but thought it worth noting the another representation of the solution)
--
Aaron Scott-Boddendijk
More information about the lambda-dev
mailing list