I don't really know the answer, but it is not about the implementation in Association. It is reasonable for associations to be equal if both their key & value are equal. The problem as you have seen is Float nan does not compare using #=. Float nan = Float nan --> false I don't the details but perhaps the clue is in the implementation of isNaN isNaN "simple, byte-order independent test for Not-a-Number" ^ self ~= self so something like this seems a better test association := #foo -> Float nan. {association} anySatisfy: [:each | each value isNaN] cheers, Mike On Mon, Nov 15, 2010 at 3:06 PM, Benjamin <benjamin.vanryseghem.pharo@gmail.com> wrote:
Hi guys,
I have another noob question :)
Why Association>>#= is not
= anAssociation
    ^self == anAssociation or: [super = anAssociation and: [value = anAssociation value]]
Because I can have strange behavior like
association := #foo -> Float nan.
{association} includes: association
answer false
:S
Thanks,
Ben
_______________________________________________ Pharo-users mailing list Pharo-users@lists.gforge.inria.fr http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users