Why is there no Stream.flatMap () function?

Question

Why is there no function Stream.flatMap()

(without any parameters) to align a Stream<Stream<T>>

?

It will simply be implemented as Stream.flatMap(o -> o)

.

In my opinion, this is by far the most common use of flatMap (Function Mapper) .

+3

principal-ideal-domain June 15. 15 at 21:02

1 answer

Sotirios Delimanolis · Answer 1 · 2015-06-15T21:13:04+0000

I would guess because it is trivial to use

import static java.util.function.Function.identity;
...  
streamOfStreams.flatMap(identity())