Primitive streams and optional

[Doug Lea]

On 11/24/12 17:40, Brian Goetz wrote:
>>> T[] mapped = Arrays.stream(input).map(mapper).toArray();
>>
> ...
>  I was mainly
> talking of the semantics presented to the user, where the user might be
> confused into thinking that indexes into the source are valid in the output,
> but this is only accidentally true in the very common case where there are no
> nulls in the input.  Which means users will assume it to be true more often,
> and be surprised.

Yeah, array indexing is not very streamy.

Silly aside: Most differences of opinion between Brian and me
ultimately boil down to some combination of

* Nulls
* Function types
* The need for separate APIs for arrays and ConcurrentHashMaps

-Doug