Groups > comp.lang.java.programmer > #34061

Re: own stream reduction

Newsgroups	comp.lang.java.programmer
Date	2016-04-03 08:32 -0700
References	<feb2691d-116f-4519-9c4d-3e01294703aa@googlegroups.com> <ndokfn$7bb$1@dont-email.me> <ndpcgq$rlf$1@news.albasani.net>
Message-ID	<7b79b3b5-fa2a-40a2-900b-d0252549d4b6@googlegroups.com> (permalink)
Subject	Re: own stream reduction
From	Philipp Kraus <philipp.kraus.flashpixx@gmail.com>

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Am Samstag, 2. April 2016 23:11:07 UTC+2 schrieb Sebastian:
> Am 02.04.2016 16:23, schrieb Eric Sosman:
> > On 4/2/2016 10:10 AM, Philipp Kraus wrote:
> >> Hello,
> >>
> >> I try to buld an own reduction stream reduction for my data structure.
> >> [...]
> >> I'm searching for a tutorial or example how I can create an own reduce
> >> operator of my own type.
> >
> >      The Java Tutorial has a page showing how a few simple reduction
> > operations can be built "from the ground up:"
> >
> > http://docs.oracle.com/javase/tutorial/collections/streams/reduction.html
> 
> In particular, as Stream.reduce() is a general-purpose reduction method, 
> you don't need to define your own reduction, you just need an 
> accumulator. The bodies of the for-loops you have shown are suitable as 
> accumulators: They are associative binary operators on Fuzzy<Boolean>.

Thanks a lot, the hint with the "accumulator" was great.

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own stream reduction Philipp Kraus <philipp.kraus.flashpixx@gmail.com> - 2016-04-02 07:10 -0700
  Re: own stream reduction Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-04-02 10:23 -0400
    Re: own stream reduction Sebastian <news@seyweiler.dyndns.org> - 2016-04-02 23:10 +0200
      Re: own stream reduction Philipp Kraus <philipp.kraus.flashpixx@gmail.com> - 2016-04-03 08:32 -0700

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