Loose ends: Optional

[Howard Lovatt]

Why not return a List, or Set, of 1 or zero elements. No need for an extra
class at all.

 -- Howard.


On 29 May 2013 23:30, Remi Forax <forax at univ-mlv.fr> wrote:

> On 05/29/2013 12:33 AM, Brian Goetz wrote:
>
>> OK, so the current proposal on the table is:
>>
>>  - Add filter, map, flatMap to Optional (these have a lot less utility on
>> the primitive versions, plus map/flatMap would require more forms)
>>  - Rename ifPresent to forEach to Optional and Optional{Int,Long,Double}
>>
>> Anyone who hasn't already expressed an opinion want to weigh in (or
>> comment on the new aspects)?
>>
>
> I think the two options are linked.
> If ifPresent is renamed to forEach it means that Optional is seen as a
> collection of elements (with zero or one element).
>
> Rémi
>
>
>> On May 28, 2013, at 4:32 PM, Tim Peierls wrote:
>>
>>  Oh. Emily Litella.
>>>
>>>
>>> On Tue, May 28, 2013 at 4:28 PM, Brian Goetz <brian.goetz at oracle.com<mailto:
>>> brian.goetz at oracle.com**>> wrote:
>>>
>>>     Sorry, Sam typo'ed and I missed it the first time.  He meant
>>>     change "ifPresent(Consumer)" to "forEach(Consumer)".  Not isPresent.
>>>
>>>     On May 28, 2013, at 4:26 PM, Tim Peierls wrote:
>>>
>>>      On Tue, May 28, 2013 at 4:22 PM, Brian Goetz
>>>>     <brian.goetz at oracle.com <mailto:brian.goetz at oracle.com**>> wrote:
>>>>
>>>>         > The implementation decides if something can be lazy, I'm
>>>>         ok with these having the same methods. In fact, I suggest we
>>>>         change the name of isPresent to forEach.
>>>>
>>>>         I'm OK with this.  Its a little weird since there is at most
>>>>         one element to each, but the connection to methods on other
>>>>         containers is nice.
>>>>
>>>>
>>>>     Please, no!
>>>>
>>>>     That would make Optional unusable for all the people who would
>>>>     actually benefit from it.
>>>>
>>>>     There must be some serious disconnect. I thought this was all
>>>>     settled.
>>>>
>>>>     --tim
>>>>
>>>
>>>
>>>
>>
>


-- 
  -- Howard.