DoubleStream, LongStream, IntStream are incompatible with Stream

[PromanSEW]

Why? I want to flatten double[][], but I can't
Stream.of(dm).flatMap(DoubleStream::of) says about incompatible types, because DoubleStream extends Object, not Stream
And Stream.ofcan't process primitive types - result is still double[]
I think this problem was fixed in 1.1.4
How to flatten multidimensional arrays of primitives?
Maybe I missed something?

[aNNiMON]

Class Stream represents object stream, use IntStream, LongStream, DoubleStream for primitives.

To flatten double[][] use flatMapToDouble:

DoubleStream doubles = Stream.of(dm).flatMapToDouble(DoubleStream::of);

[PromanSEW]

Thanks, I don't know about these new methods

[aNNiMON]

That's all right. There are special methods to convert between Streams:

from \ to	Stream	IntStream	LongStream	DoubleStream
Stream	map / flatMap	mapToInt / flatMapToInt	mapToLong / flatMapToLong	mapToDouble / flatMapToDouble
IntStream	mapToObj	map / flatMap	mapToLong	mapToDouble
LongStream	mapToObj	mapToInt	map / flatMap	mapToDouble
DoubleStream	mapToObj	mapToInt	mapToLong	map / flatMap