Comments on: RailsConf08: Meta-programming Ruby for Fun and Profit http://www.xcombinator.com/2008/05/29/railsconf08-meta-programming-ruby-for-fun-and-profit/ making the human scalable Tue, 02 Mar 2010 17:04:37 -0800 hourly 1 By: mike from africa http://www.xcombinator.com/2008/05/29/railsconf08-meta-programming-ruby-for-fun-and-profit/comment-page-1/#comment-122 mike from africa Thu, 05 Jun 2008 10:19:44 +0000 http://www.xcombinator.com/2008/05/29/railsconf08-meta-programming-ruby-for-fun-and-profit/#comment-122 hi, thx for the post~ i just have some questions with the first example, ExistingKlass.class_eval do def change_a_method # ... end end what happens when this code is being loaded before ExistingKlass has been defined? How does it "guarantee" that the class already exists? by loading it when it sees ...class_eval? hi, thx for the post~
i just have some questions with the first example,

ExistingKlass.class_eval do
def change_a_method
# …
end
end

what happens when this code is being loaded before ExistingKlass has been defined? How does it “guarantee” that the class already exists? by loading it when it sees …class_eval?

]]> By: The Mega RailsConf 2008 Round Up http://www.xcombinator.com/2008/05/29/railsconf08-meta-programming-ruby-for-fun-and-profit/comment-page-1/#comment-111 The Mega RailsConf 2008 Round Up Mon, 02 Jun 2008 15:30:26 +0000 http://www.xcombinator.com/2008/05/29/railsconf08-meta-programming-ruby-for-fun-and-profit/#comment-111 [...] RailsConf08: Meta-programming Ruby for Fun and Profit by Nate Murray [...] [...] RailsConf08: Meta-programming Ruby for Fun and Profit by Nate Murray [...]

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