Checking if a string is null

[Bruno Medeiros]

Manfred Nowak wrote:
> Bruno Medeiros wrote
> 
>> one expects it to have the same properties
>> that a proper opEquals should (such as these: 
>> http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#equal
>> s(java.lang.Object) ).
> 
> That definition uses the phrase "most discriminating possible 
> equivalence relation". I believe that types exist for which such a 
> relation is not uniquely determined. Do you have a proof or a reference  
> for the contrary?
> 
> -manfred
> 

What do you mean by "I believe that types exist for which such a 
relation is not uniquely determined" ?

-- 
Bruno Medeiros - MSc in CS/E student
http://www.prowiki.org/wiki4d/wiki.cgi?BrunoMedeiros#D