First, you can't use the :: method reference syntax with a variable.
Secondly, the map and flatMap functions currently exist on the Stream
interface and return a modified Stream. So you have to start with
people.stream() and end with either a Stream instance or call
.into(someCollection) to put them into a collection.
On Friday, November 2, 2012 3:29:25 PM UTC-5, Ricky Clarkson wrote:
>
> With proper support it would be:
>
> List<String> zips2 =
> people.flatMap(Person::addressOption).flatMap(Address:zipOption);
>
> That might take a stubborn person a couple of minutes to understand
> but after that even the most determined anti-flatmapper will be able
> to curse, rewrite, fire the writer of but ultimately understand code
> like this without any real trouble.
>
> On Fri, Nov 2, 2012 at 5:22 PM, Fabrizio Giudici
> <fabrizio...@tidalwave.it <javascript:>> wrote:
> > On Fri, 02 Nov 2012 21:12:07 +0100, clay <clayt...@gmail.com<javascript:>>
> wrote:
> >
> >> In hindsight, a simpler solution (with static import of custom
> toIterable
> >> method) would be:
> >>
> >> final List<String> zips2 = new ArrayList<String>();
> >> for (Person p : people) { for (Address a : toIterable(p.addressOption))
> {
> >> for (String z : toIterable(a.zipOption)) { zips2.add(z); } } }
> >
> >
> > Honestly, I don't find it particularly readable.
> >
> >
> >
> > --
> > Fabrizio Giudici - Java Architect @ Tidalwave s.a.s.
> > "We make Java work. Everywhere."
> > http://tidalwave.it/fabrizio/blog - fabrizio...@tidalwave.it<javascript:>
> >
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