Indexing access for Lists and Maps considered harmful?

[Rémi Forax]

Bruce Chapman a écrit :
> Ted Neward wrote:
>   
>> Under what situation would a = b = c (where b is boxed(c) ) yield different
>> results? Aside from concurrency scenarios, my understanding is that boxed or
>> not, the value is still "c", thus a would hold the value "c", boxed or
>> otherwise.
>>   
>>     
> Digressing from a multiple assignment (its just one example of using the 
> value of an assigment expression), but still using an assignment 
> expression as an expression then given
>
> list<Integer> list;
>
> void doSomething(int v) { .... }
>
> void doSomething(Integer v) { ...}
>
> which method is invoked by the following?
>
>     doSomething(list[0]=5)
>
> If the implementation is consistent with the existing JLS, then it MUST 
> be the second method.
>
> Bruce
>   
Yes.
I think you can rewrite your example as a puzzler :

List<Integer> list = ...
void doSomething(int v) { .... }    //1
void doSomething(Object o) { ...}   //2

doSomething(list[0]=5) // call #2


cheers,
Rémi