ArrayFactory SAM type / toArray
Brian Goetz
brian.goetz at oracle.com
Wed Sep 19 14:28:12 PDT 2012
> Presumably because you don't know the size of the array until the
> lambda is called if this is on Stream.
Right, in the stream case, you may not know the target size, but the
stream implementation very well may. Making the toArray(T[]) even less
useful for streams, and a toArray(ArrayFactory<T>) more useful.
> I think that you should just overload .into with a factory so you
> could even pre allocate collections.
But how does that help if you really want an array? (And, if you're
talking about overloading into with a factory that produces an array,
the only difference is whether you call it into() or toArray()).
(BTW, there are some moderately compelling type-inference-limitation
reasons to not overload into()).
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