Re: Filter on future doesn't make sense

Hi Avi,

Use Fututre[Option[Int]] if you want to deal with Some/None as a result of
filter ( f.map(_.filter(p) ) (alt. see monad transformers)

-- 
Cheers,
√
On Jul 1, 2016 8:53 AM, "Avi Levi" <[email protected]> wrote:

I was trying to figure out what should I accept when filtering over a
future .
the current implementation yields either a T or an exception which kind of
breaks referential transparency (doesn't it ?) .
on the other hand what can I expect given this expression

*def foo(i:Int):Future[Int]*

the type result of

*foo(1).filter(_ % 2 == 0)*


I.M.H.O I would expect it to yield Option[T]  which makes more sense to
express that we might get a value that pass the filter or not . is that
make sense ?

Cheers
Avi

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