Iterable::forEach not returning Iterable

[David Conrad]

On Tue, May 22, 2012 at 4:13 PM, Maurizio Cimadamore <
maurizio.cimadamore at oracle.com> wrote:

> On 22/05/12 19:37, David Conrad wrote:
>
>> List<File>  files...
>> files.filter( File::isFile ).map(tee((File f) ->  { Log.log(f); return f;
>> })).filter( ... ).map( ConfigurationFile::new );
>>
>> I had to qualify the type of the lambda parameter, though; the compiler
>> couldn't infer it. Ah, well.
>>
> RIght, because the prototype doesn't support nested generic method call,
> so the call to tee nested into map yields Object for T - but stay tuned, as
> a solution is in the works ;-)
>
> Maurizio
>

Good news. :)

I hope it will also clear up this case, which I'm sure you're already aware
of (this is with the May 11 lambda build):

import java.util.Set;
import java.util.TreeSet;
import static java.util.Arrays.iterable;

public class Setty {
    public static void main(String[] args) {
        Set<Integer> s =
            iterable(args).map(Integer::new).into(new TreeSet<>());
        System.out.println(s);
    }
}

dconrad at darwin ~/src/java
$ javac Setty.java
Setty.java:8: error: incompatible types
            iterable(args).map(Integer::new).into(new TreeSet<>());
                                                 ^
  required: Set<Integer>
  found: TreeSet<Object>
1 error

"I know what you meant, but I want to hear you say it." :)

Cheers,
David