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From Thilo Goetz <twgo...@gmx.de>
Subject Re: generics: getViewIterator
Date Mon, 10 Aug 2009 16:42:33 GMT
Marshall Schor wrote:
> 
> Adam Lally wrote:
>>> Same issue with using Iterator<AbstractCas>
>>> Two quick fixes:  casting:
>>> Iterator<AbstractCas> s = (Iterator<AbstractCas>) aCas.getViewIterator();
>>> and
>>> Iterator<? super CAS> s = aCas.getViewIterator();
>>>
>>>     
>> Right.. I think it needs to be like this:
>>
>> <T extends Iterator<? super CAS>> T getViewIterator()
>>   
> 
> I tried this, and get for :
> Iterator<CAS> s = aCas.getViewIterator();
> the message: Bound mismatch: The generic method getViewIterator() of
> type CAS is not applicable for the arguments (). The inferred type CAS
> is not a valid substitute for the bounded parameter <T extends
> Iterator<? super CAS>>
> and no quick fixes.
> 
> I tried some variants, but couldn't get something that worked...

Let's just try to keep it so simple that as a user, I don't
need a PhD in generics to figure out what the return type
of a method is.

--Thilo

> 
> -Marshall
>> But I am not sure the usefulness of this is worth the added complexity.
>>   -Adam
>>
>>
>>   


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