Hello All this is explained in the Mooc (with mutliple videos and gradually) and Pharo by Example chapter.
Pay attention you do not need to understand the metaclass core to program in Pharo. This is just for fun and a bonus. This is why in general I do not show this diagram directly. Check the mooc videos we designed based on more than 10 years of experience teaching Pharo to people. S > On 12 Dec 2020, at 20:20, g_patrickb--- via Pharo-users > <pharo-users@lists.pharo.org> wrote: > > I understand if you have Class A with methods p and q that you can call q > from p doing: > > self q > > But there are some cases where a method doesn’t exist but self is still used. > I found a tutorial on creating a Reddit type app and it had a .mcz which I > loaded. > > Here is an example from Class StLoggedInComponent and method refreshReport: > > self report rows: (self session user tasks select: self filterBlock). > > There is a method ‘report’ so I understand that, but there is no method named > ‘session’ so what is the use of self? > > And Class StDatabase has method ‘updateTask:’ has: > > self subclassResponsibility. > > But no method called ‘subclassResponsibility’ exists in the Class. > > Also, Class StLoggedInComponents has method ‘testTasks’ with this: > > ^ self class testTasks > > What is ‘self class’? > > Thank you. > -------------------------------------------- Stéphane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, Bât.A, Park Plaza Villeneuve d'Ascq 59650 France
