Accessing non-final local variables from a lambda expression

[Fatih Coskun]

>   
>> In BGGA, CfJ, and other languages with lambdas, one could write it
>> simply like this
>>
>> <T> Iterable<T> everyOther(Iterable<T> input) {
>> ? ?boolean flag = true;
>> ? ?return filter(input, (T t)->(flag ^= true));
>> }
>>
>> But project lambda forbids access to mutable local variables from the
>> enclosing scope.
>>     
>
> <T> Iterable<T> everyOther(Iterable<T> input) {
>    final boolean[] flag = new boolean[] { true };
>    return filter(input, (T t)->(flag[0] ^= true));
> }
>
> It's not beautiful, but not the end of the world either. And the
> performance is comparable, since in any case you have to create and
> dereference some heap object.
>
>
>   


How about adding at least some syntactic sugar for that 
"array-wrapper-idiom"? The code looks really ugly, syntactic sugar would 
make it look better.

Fatih