I was focusing on the "=" being the problem... Worked nicely. Many thanks!
On Tue, Jan 6, 2009 at 7:20 PM, Frederick Cheung <[email protected] > wrote: > > > On 6 Jan 2009, at 23:56, Harold A. Giménez Ch. wrote: > > > Thanks for the response. > > > > So how in the world is this implemented? The []= method's source > > code is in C. Other classes override it in a subclass, which works > > fine, but how would I go about implementing a method that works like > > the Hash class' []= method? > > > > I'm not sure what you mean by "skipping alias_method_chain" this > > time. If I do > > > > alias :[]_without_feature=, :[]= > > alias :[]=, :[]_with_feature > > > > I get the same error, as expected. So how would I go about changing > > this method's behavior? > > > > just call it square_bracket_without feature or something like that. > the problem isn;t the method aliasing it's defining a method called > []_with_feature= > > Fred > > > Thanks again, > > -H > > > > On Tue, Jan 6, 2009 at 6:49 PM, Frederick Cheung < > [email protected] > > > wrote: > > > > > > On 6 Jan 2009, at 23:36, Harold wrote: > > > > > > > > I'm trying to monkeypatch the []= method in the Hash class: > > > > > > > doesn't seem to be anything to do with alias_method_chain - just > > sticking > > def []_with_feature=(a,b) > > puts 'foo' > > end > > > > into irb causes similar errors. You'll just have to skip alias method > > chain this time. > > > > Fred > > > Hash.class_eval do > > > def []_with_feature=(a,b) > > > puts 'foo' > > > end > > > alias_method_chain :[]=, :feature > > > end > > > > > > Something is wrong with the syntax, but I can't figure out what. The > > > alias_method_chain method does look for punctuation (= in this case) > > > and expects it to be at the end of the aliased method ([] > > > _with_feature=), but I get the following syntax error: > > > > > > SyntaxError: compile error > > > (irb):5: syntax error, unexpected ')', expecting '=' > > > (irb):7: syntax error, unexpected kEND, expecting ')' > > > (irb):9: syntax error, unexpected kEND, expecting ')' > > > > > > Any ideas? > > > > > > Thanks, > > > -H > > > > > > > > > > > > > > > > > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
