It seems that this issue can be fixed by modifying the = method in Association.

Association>>= anAssociation

^ super = anAssociation

and: [ 

value == anAssociation value

ifTrue: [ true ]

ifFalse: [ value = anAssociation value ] ]

Cheers...

On Sat, Dec 8, 2012 at 5:35 PM, Benoit St-Jean <bstjean@yahoo.com> wrote:

Same behavior in Squeak 4.2 btw

 

-----------------
Benoit St-Jean
Yahoo! Messenger: bstjean
A standpoint is an intellectual horizon of radius zero.
(Albert Einstein)

---

From: Ciprian Teodorov <ciprian.teodorov@gmail.com>
To: Pharo-project@lists.gforge.inria.fr
Sent: Saturday, December 8, 2012 11:11:44 AM
Subject: Re: [Pharo-project] strange == behavior

by the way, we have the same thing in 1.0, 1.1, 1.3.

On Sat, Dec 8, 2012 at 5:10 PM, Ciprian Teodorov <ciprian.teodorov@gmail.com> wrote:

Hi guys,

Playing with some recursive data-structure I have found some strange piece of behavior in Pharo.

If in an workspace we try to evaluate:

a := Association new.

a key: 3.

a value: a.

a == a value.

the first time we get "true", the second we get an infinite loop... 

A simple workaround is to declare "a":

|a|

a := Association new.

a key: 3.

a value: a.

a == a value.

My question now is: Is this a bug or a feature ?

By the way the same thing happens in 1.4 and 2.0 equally.

By the way, in Pharo 2.0 doing cmd + . erases the lines selected in the workspace replacing them by "." 

Cheers,

--
Dr. Ciprian TEODOROV
Ing�nieur D�veloppement CAO

t�l : 06 08 54 73 48
mail : ciprian.teodorov@gmail.com
www.teodorov.ro

--
Dr. Ciprian TEODOROV
Ing�nieur D�veloppement CAO

t�l : 06 08 54 73 48
mail : ciprian.teodorov@gmail.com
www.teodorov.ro

--
Dr. Ciprian TEODOROV
Ing�nieur D�veloppement CAO

t�l : 06 08 54 73 48
mail : ciprian.teodorov@gmail.com
www.teodorov.ro