I think you redefine hash to allow a Set to know if two objects are the same or not. So it's not an equals but it's a way for a Set to know if an equivalent element is already on a Set or not. Correct me if i'm wrong.
On 26 May 2015 at 20:45, Julien Delplanque <jul...@tamere.eu> wrote: > The subject of this mail is exactly my question. > > I came to this question by looking at Object>>#= message implementation. > > """ > = anObject > "Answer whether the receiver and the argument represent the same > object. If = is redefined in any subclass, consider also redefining the > message hash." > > ^self == anObject > """ > > When do we need to redefine #hash message? > > Is it the right way to implement equality between two objects or is there > another message that I should override? > > Regards, > Julien > -- Cheers Cyril Ferlicot
