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From: Jeff Higgins <jeff@invalid.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: Puzzler: Fun with Streams.
Date: Wed, 13 May 2015 08:21:35 -0400
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On 05/12/2015 10:01 PM, Daniel Pitts wrote:
> It occurred to me that I could write this little snippet someplace, and
> it would work.
>
>      return stream.filter(o->o<-o);
>
> stream is an object which implements java.util.stream.BaseStream, though
> I won't tell you which one
>
> Might be obvious to everyone, but I thought it was a good little puzzler.
>
> What input do you think this will work with, and what is the result?

package example;

import java.util.Arrays;
import java.util.stream.IntStream;

public class FilterTest {

   public static void main(String[] args) {
     int[] test = new int[]{-2,-1,0,1,2};
     filter(test).forEach(p -> System.out.println(p));

   }
   static IntStream filter(int[] t) {
     IntStream stream = Arrays.stream(t);
     return stream.filter(o->o<-o);
   }

}