Yes I do have them but without the ">>" signs This is what I have inside the CharacterToken Class characterData: anObject characterData := anObject This is where pharo complains characterToken := CharacterToken new. characterToken characterData: AMPERSAND. It says it doesn't understand characterData though it is defined in the CharacterToken class The setters and getters were generated by pharo. So im not sure about what the >> is for From: pharo-users-bounces@lists.gforge.inria.fr [mailto:pharo-users-bounces@lists.gforge.inria.fr] On Behalf Of Luc Fabresse Sent: Wednesday, April 24, 2013 8:10 PM To: A friendly place where any question about pharo is welcome Subject: Re: [Pharo-users] Setters for instance variables Hi, 2013/4/24 Mohammad Al Houssami (Alumni) <mha53@mail.aub.edu<mailto:mha53@mail.aub.edu>> Hello again, If I have an instance variable A in ClassA and I want to use it in ClassB. If I do the following in ClassB objectA := ClassA new. objectA A: "new value for A". Why doesn't this work? Isnt this calling the setter of A on the objectA ? Pharo doesn't understand it for some reason . yes. but a setter is regular method. did you defined the method in ClassA. also, by convention method names start with a lowercase. Example: Object subclass: #ClassA iv: 'a' ClassA>>a: newValue a := newValue objA := ClassA new. objA a: 1 Cheers, Luc

Ok okay... im new here so I didn’t know that. So why is pharo complaining then ? -----Original Message----- From: pharo-users-bounces@lists.gforge.inria.fr [mailto:pharo-users-bounces@lists.gforge.inria.fr] On Behalf Of Igor Stasenko Sent: Wednesday, April 24, 2013 8:40 PM To: A friendly place where any question about pharo is welcome Subject: Re: [Pharo-users] Setters for instance variables Class>>method ..... simply a way to show code snippet for a method and to which class it should belong to. Note that this notation is not syntactically correct in smalltalk. On 24 April 2013 21:24, Mohammad Al Houssami (Alumni) <mha53@mail.aub.edu> wrote:

Yes I do have them but without the ">>" signs This is what I have inside the CharacterToken Class

characterData: anObject

characterData := anObject

This is where pharo complains

characterToken := CharacterToken new.

characterToken characterData: AMPERSAND.

It says it doesn’t understand characterData though it is defined in the CharacterToken class

The setters and getters were generated by pharo. So im not sure about what the >> is for

From: pharo-users-bounces@lists.gforge.inria.fr [mailto:pharo-users-bounces@lists.gforge.inria.fr] On Behalf Of Luc Fabresse Sent: Wednesday, April 24, 2013 8:10 PM To: A friendly place where any question about pharo is welcome Subject: Re: [Pharo-users] Setters for instance variables

Hi,

2013/4/24 Mohammad Al Houssami (Alumni) <mha53@mail.aub.edu>

Hello again,

If I have an instance variable A in ClassA and I want to use it in ClassB.

If I do the following in ClassB

objectA := ClassA new.

objectA A: "new value for A".

Why doesn’t this work? Isnt this calling the setter of A on the objectA ? Pharo doesn’t understand it for some reason .

yes.

but a setter is regular method.

did you defined the method in ClassA.

also, by convention method names start with a lowercase.

Example:

Object subclass: #ClassA

iv: 'a'

ClassA>>a: newValue

a := newValue

objA := ClassA new.

objA a: 1

Cheers,

Luc

-- Best regards, Igor Stasenko.

Actually CamilLo you are right I do. I actually have everything on the class side and not on the instance side. What is the difference? And shall I assume it works if I move them to the instance side ? -----Original Message----- From: pharo-users-bounces@lists.gforge.inria.fr [mailto:pharo-users-bounces@lists.gforge.inria.fr] On Behalf Of Camillo Bruni Sent: Wednesday, April 24, 2013 9:14 PM To: A friendly place where any question about pharo is welcome Subject: Re: [Pharo-users] Setters for instance variables On 2013-04-24, at 21:46, "Mohammad Al Houssami (Alumni)" <mha53@mail.aub.edu> wrote:

Ok okay... im new here so I didn't know that. So why is pharo complaining then ?

I'd guess you installed the method on class side, and not instance side :)

You should read the pharo by example book :) Stef On Apr 24, 2013, at 11:15 PM, Mohammad Al Houssami (Alumni) <mha53@mail.aub.edu> wrote:

Actually CamilLo you are right I do. I actually have everything on the class side and not on the instance side. What is the difference? And shall I assume it works if I move them to the instance side ?

-----Original Message----- From: pharo-users-bounces@lists.gforge.inria.fr [mailto:pharo-users-bounces@lists.gforge.inria.fr] On Behalf Of Camillo Bruni Sent: Wednesday, April 24, 2013 9:14 PM To: A friendly place where any question about pharo is welcome Subject: Re: [Pharo-users] Setters for instance variables

On 2013-04-24, at 21:46, "Mohammad Al Houssami (Alumni)" <mha53@mail.aub.edu> wrote:

...

Ok okay... im new here so I didn't know that. So why is pharo complaining then ?

I'd guess you installed the method on class side, and not instance side :)

On Apr 25, 2013, at 7:20 PM, "Esteban A. Maringolo" <emaringolo@gmail.com> wrote:

I like to see a RTFM from time to time in a Smalltalk mailing list :)

:) me too. because it means that we made progress about the Manual existence :) I'm cleaning right the github repo of PBE and others. Stef

Regards! Esteban A. Maringolo

2013/4/25 stephane ducasse <stephane.ducasse@free.fr>:

...

You should read the pharo by example book :)

Stef

On Apr 24, 2013, at 11:15 PM, Mohammad Al Houssami (Alumni) <mha53@mail.aub.edu> wrote:

...

Actually CamilLo you are right I do. I actually have everything on the class side and not on the instance side. What is the difference? And shall I assume it works if I move them to the instance side ?

-----Original Message----- From: pharo-users-bounces@lists.gforge.inria.fr [mailto:pharo-users-bounces@lists.gforge.inria.fr] On Behalf Of Camillo Bruni Sent: Wednesday, April 24, 2013 9:14 PM To: A friendly place where any question about pharo is welcome Subject: Re: [Pharo-users] Setters for instance variables

On 2013-04-24, at 21:46, "Mohammad Al Houssami (Alumni)" <mha53@mail.aub.edu> wrote:

...

Ok okay... im new here so I didn't know that. So why is pharo complaining then ?

I'd guess you installed the method on class side, and not instance side :)

I must admit that the instance/class "side" is a common error that has bitten many programmers. It still bites me from time to time. Regards, Esteban A. Maringolo