On 11/05/2013 12:48, Cl��ment Bera wrote:

Hello,

The method that exists is #withArgs:executeMethod: so replace��

"executeMethod: someCode" ==> by ==> "withArgs: #( ) executeMethod: someCode"

or create the method:

Object>>executeMethod: compiledMethod

�� ^ self withArgs: #( ) executeMethod: compiledMethod

Then it should work.

You're the second one to ask that question I will make a fix. Are you in Pharo 2 or Pharo 3 ?

Pharo 2.0.�� It's certainly not a stopper as one can always do <code>ProfStef next.</code>.�� However since the lesson is about reflection, it somehow feels weird :-)

#perform: is different. #perform: takes a selector as argument and the lookup will find out the method to execute, whereas executeMethod: directly run a method with no lookup (which can lead to a crash if the receiver cannot run properly this method).

2013/11/5 Joachim Tuchel <jtuchel@objektfabrik.de>

Hi,

I am not sure whether Pharo implements or once implemented a special method like executeMethod: but in Smalltalk the selector for sending a message to an object is #perform: so you should probably try to replace #executeMethod with #perform: .
But I am sure somebody more familiar with ProfStef and Pharo will comment on your issue more specifically.

HTH,

Joachim

Am 05.11.13 07:36, schrieb Bahman Movaqar:

Hi all,

Reading ProfStef at lesson 25 (Reflections), when I try to run the last
statement <code>ProfStef default executeMethod: (ProfStef
lookupSelector:#next).</code>, the error pops up saying <error>Unknown
selector executeMethod:</error>. ��Am I doing anything wrong?

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Bahman Movaqar  (http://BahmanM.com)

ERP Evaluation, Implementation & Deployment Consultant
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