Into

[Remi Forax]

On 12/25/2012 12:25 AM, Joe Bowbeer wrote:
> I was going to say something about into() here but the topic has 
> morphed to sequential()?

yes, true.

I agree with Brian that into is not as great as it can be but I think 
the problem is the interface Destination that into uses.
We have the Spliterator interface that can recursively divide a data 
structure, into should use the dual concept that is able to gather 
several parts together to create a new data structure.

interface Demultiplexer<T,C> { // find a better name
    C create(Chunks<T> chunks);
}

interface Chunks<T> {
    int getChunkCountIfKnown();         // number of chunks
    int getTotalSizeIfKnown();               // total number of elements
    Stream<T> nextChunk();              // get each chunks, return null 
if no more chunk
}

with into declared like this: <C> C into(Demultiplexer<? super T, ? 
extends C> demux)
and a new method in stream which is able to copy the stream elements 
into an array at a specific offset.

Rémi