Ok. perform: is working for arithmetic but what about perform: itself? | x y plu perf wi args | x := 3. y := 4. plu := '+'. perf := 'perform:'. wi := 'with:'. args := Array new: 3. args at: 1 put: plu asSymbol; at: 2 put: wi asSymbol; at: 3 put: y. x perform: perf asSymbol withArguments: args. This code tells me that there is wrong number of arguments in permforn: How can I fix it? 2012/4/29 vittly <vitaly.kosenko@gmail.com>
Mmm thnx for replie! I'll run this code and experemt with it
2012/4/29 Georg Heeg [via Smalltalk] <[hidden email]<http://user/SendEmail.jtp?type=node&node=4596244&i=0>
Please try to understand the following code:
| a b c |
a := 3. b := 4. c := '+'. ^a perform: c asSymbol with: b
Georg Heeg eK, Dortmund und Köthen, HR Dortmund A 12812 Wallstraße 22, 06366 Köthen Tel. +49-3496-214328, Fax +49-3496-214712
-----Ursprüngliche Nachricht----- Von: [hidden email]<http://user/SendEmail.jtp?type=node&node=4596217&i=0> [mailto:[hidden email]<http://user/SendEmail.jtp?type=node&node=4596217&i=1>] Im Auftrag von vittly Gesendet: Sonntag, 29. April 2012 10:25 An: [hidden email] <http://user/SendEmail.jtp?type=node&node=4596217&i=2> Betreff: [Esug-list] metaprogramming in smalltalk
Hi! Please could you help me understand smalltalk capabilities in metaprogramming? Q: could I construct arbitrary message by program? Create keywords from strings and than build sequence of them to make a message. Mm? Or may be store keywords in variables and then pass variables withing messages extracting stored keywords? Am I dreamer?)
-- View this message in context: http://forum.world.st/metaprogramming-in-smalltalk-tp4595928p4595928.html Sent from the ESUG mailing list archive at Nabble.com.
_______________________________________________ Esug-list mailing list [hidden email] <http://user/SendEmail.jtp?type=node&node=4596217&i=3> http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org
_______________________________________________ Esug-list mailing list [hidden email] <http://user/SendEmail.jtp?type=node&node=4596217&i=4> http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org
------------------------------ If you reply to this email, your message will be added to the discussion below: http://forum.world.st/metaprogramming-in-smalltalk-tp4595928p4596217.html To unsubscribe from metaprogramming in smalltalk, click here. NAML<http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instant...>
------------------------------ View this message in context: Re: metaprogramming in smalltalk<http://forum.world.st/metaprogramming-in-smalltalk-tp4595928p4596244.html>
Sent from the ESUG mailing list archive<http://forum.world.st/ESUG-f1589038.html>at Nabble.com.
_______________________________________________ Esug-list mailing list Esug-list@lists.esug.org http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org