Yes that makes sense and helps me better undnerstand the streams api.
I am struggling right now though. here is my pseudo code

Flow<Integer, Pair<Try<HttpResponse>, Integer>, BoxedUnit> flow = ....;

final Flow<Integer, ByteString, BoxedUnit> byteStringFlow = 
flow.flatMapConcat(pair -> {
   Try<HttpResponse> responseTry = pair.first();
   return responseTry.get().entity().getDataBytes();
});


I am trying to hold onto the Integer and resulting Bytesring on flow that I 
connect to 
byteStringFlow. 

I am trying to use viaMat but I cannot find a way to add it to 
byteStringFlow....





Am Mittwoch, 13. Januar 2016 16:09:38 UTC+1 schrieb drewhk:
>
> Hi,
>
> How would that work? It is an empty (identity) Flow, therefore it cannot 
> cannot change the type of the input to another type since elements are 
> unchanged.
>
> You need to add at least one combinator to the flow to change the output 
> types.
>
> -Endre
>
> On Wed, Jan 13, 2016 at 4:05 PM, <[email protected] <javascript:>> wrote:
>
>> I know  how to create a simple flow:
>>
>> Flow<Integer, Integer, BoxedUnit> flowUniform = Flow.create();
>>
>> But how-to create a not uniform flow?
>>
>> Flow<Integer, Pair<Try<HttpResponse>, Integer>, BoxedUnit> flowNotUniform = 
>> Flow.create(); // this doesn't work
>>
>> Many Greetings John?
>>
>>
>> -- 
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