On 5 May 2014 22:14, Benedikt Ritter <benerit...@gmail.com> wrote:
>
>
>> Am 05.05.2014 um 22:20 schrieb sebb <seb...@gmail.com>:
>>
>>> On 5 May 2014 18:40, Benedikt Ritter <brit...@apache.org> wrote:
>>> Hi,
>>>
>>> we have a pull request at github for [lang] which proposes to introduce new
>>> methods in NumberUtils that take varargs as input parameters instead of
>>> arrays [1]. I think a better solution would be to change those old methods
>>> to use varargs instead of introducing new methods. Since I'm not sure how
>>> this affects binary compatibility, I'd like to here what others thing about
>>> this.
>>>
>>> Clirr doesn't even create an info for a change like this, so I'm assuming
>>> it can be changed without affecting clients.
>>
>> In most cases, the effect is the same, but there are some edge cases
>> according to
>>
>> http://stackoverflow.com/questions/5405673/java-varags-method-param-list-vs-array
>>
>> However, I don't like the proposed solution which needs new names.
>
> Yes, I don't like that either.
>
>> One way round this might be to extend the existing methods as follows:
>>
>> max(a,b,c,...)
>
> This would be a solution. But why not change max(a[]) to max(a...) if it is 
> binary compartible?

How can the compiler know whether max(1,2,3) is max(a,b,c) or max(a...) ?

> The corner case mentioned in the stackoverflow article seems to be about 
> generic varargs parameters.

Yes, it does seem to only affect code that would not have compiled previously.

>>
>> I think this was already done in some Commons code?
>
> I've had a brief look at StringUtils. There were some changes like this 
> documented by they happend to be implemented in 3.0, so I was unsure :-)
>
>>
>>> Benedikt
>>>
>>>
>>> [1] https://github.com/apache/commons-lang/pull/23
>>>
>>> --
>>> http://people.apache.org/~britter/
>>> http://www.systemoutprintln.de/
>>> http://twitter.com/BenediktRitter
>>> http://github.com/britter
>>
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