Feature suggestion: Add static equals methods to Float and Double

[Joe Darcy]

See

https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Objects.html#compare(T,T,java.util.Comparator)

-Joe

On 1/6/2019 2:56 AM, Zheka Kozlov wrote:
> Why don't we just add a generic method which compares any instances of
> Comparable?
>
> public interface Comparator<T> {
>          ...
>
> public static <T extends Comparable<? super T>> boolean equal(T x, T y) {
> return x.compareTo(y) == 0;
> }
> }
>
> Usage:
>
> Comparator.equal(1, 1); // true
> Comparator.equal(1.0, 1.0); // true
> Comparator.equal(2.0f, 2.0f); // true
> Comparator.equal("abc", "def"); // false
> Comparator.equal("abc", 1); // compilation error
>
> сб, 5 янв. 2019 г. в 09:33, <
> some-java-user-99206970363698485155 at vodafonemail.de>:
>
>> Hello Remi,
>> You are right, the proposed method names would prevent backwards
>> compatibility, I forgot to think
>> about that. Sorry for the trouble.
>> Maybe a different, currently not used name, such as `areEqual`,
>> `primitiveEquals` or similar would
>> be better.
>> What do You think about the addition of such a method?
>>
>> Kind regards
>>
>>> Remi Forax <forax at univ-mlv.fr> hat am 5. Januar 2019 um 00:50
>> geschrieben:
>>>
>>> Hi,
>>> it's not obvious to me that this is a source backward compatible change.
>>>
>>> if you have something like:
>>>    interface Fun { boolean eq(Double a, double b); }
>>>    ...
>>>    Fun fun = Double::equals;
>>>
>>> it's not clear to me which variant will be selected ?
>>>
>>> regards,
>>> Rémi