Expose elementType of EnumSet and EnumMap
mwisnicki at gmail.com
Sat Sep 21 21:32:45 UTC 2013
On Sat, Sep 21, 2013 at 10:21 PM, Remi Forax <forax at univ-mlv.fr> wrote:
> No, you can add methods to one value of an enum using the anonymous class
Thanks for pointing this out. This is something that can be clarified
Though javadocs of existing factory methods of EnumSet are not so
pedantic about "elementType" argument.
> elementType and the reified type are the same information.
> by the way, elementType and the class of the array (universe) are also the
> same information.
I fail to see a problem here. In fact this is a good case why such
method is necessary - if generics get reified in Java 9 and designers
of EnumSet decide to remove redundant elementType field, all software
depending on existence of this field will break. If on the other hand
there was a getElementType() method in Java 8, it could be safely
changed to obtain element type through whatever new mechanism is
available and existing software using getElementType() keeps working
> I've taken a look to the code, it can be changed to avoid to use
> the parameterized type is not propagated when deserializing.
> see the comment here:
That was just an example, there is more code like that out there,
including my own and it's not always easy to restructure it in a way
that would allow propagating declared type.
>> 2. A Visual editor of some sort may display EnumSet as a list of
>> checkboxes if it knows what type of enum values can be contained
>> within this set.
> again the declared type can be propagated.
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