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Groups > comp.lang.java.programmer > #33296

Re: stream collect with own class

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On 12/4/2015 8:12 AM, Philipp Kraus wrote:
> Hello,
>
> I'm using streams and I would like to create "fuzzy logic implications". In short call, I have a collection with
>
> Set<IFuzzy> x;
>
> and my IFuzzy interface is defined like
>
> public interface IFuzzy
> {
>       public Boolean getResult();
>
>       public Double getFuzzy();
> }
>
> I run in my code
>
> IFuzzy y = x.stream()......
>
> I would like to implode / aggregate each IFuzzy object into one result, so I need to call on each element from x the getResult() and the getFuzzy() method and collect / implode the data.
>
> How can I do this call with a stream operation? IMHO I need to write an operator like allMatch()

     If I understand you correctly, you want to combine information
from many IFuzzy's into a single IFuzzy instance.  (Just ignore me
if I've understood *in*correctly.)  In that case, you need some kind
of a .reduce() operation, either something from the Collectors class
or something you write yourself.

-- 
esosman@comcast-dot-net.invalid
"Don't be afraid of work. Make work afraid of you." -- TLM

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stream collect with own class Philipp Kraus <philipp.kraus.flashpixx@gmail.com> - 2015-12-04 05:12 -0800
  Re: stream collect with own class Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-12-04 08:58 -0500
    Re: stream collect with own class Philipp Kraus <philipp.kraus.flashpixx@gmail.com> - 2015-12-04 14:46 -0800
      Re: stream collect with own class Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-12-05 08:34 -0500
        Re: stream collect with own class Philipp Kraus <philipp.kraus.flashpixx@gmail.com> - 2015-12-05 07:36 -0800
          Re: stream collect with own class Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-12-05 10:57 -0500

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