Cancelable streams

[Remi Forax]

On 01/09/2013 08:44 PM, Brian Goetz wrote:
> I've pushed a stream op "forEachUntil(Block, BooleanSupplier)".  After 
> offline discussion with Doug, this seemed to be an acceptable 
> alternative to having no cancelation support at all.
>

Sorry, I've forgotten to answer.
While I agree with the concept, I think forEachUntil has the wrong 
signature, the issue I see is that some time you want to stop depending 
on a value which is a property of an element, but here the 
BooleanSupplier doesn't have access to the current element.

I would prefer
     void forEachUntil(Predicate<? super T> condition)

so one can write
     stream.forEachUntil(e -> e.accuracy <= 0.5)

cheers,
Rémi