From: ts <decoux@...>
Date: 2001-09-11T21:21:13+09:00
Subject: [ruby-talk:21093] Re: Do literals invoke new?

>>>>> "J" == Jason Voegele <jason@jvoegele.com> writes:

J> 1) Do literals invoke new?

 a = [1, 2]
 a = {1 => 2}
 a = "12"

 is directly implemented via a node (NODE_ARRAY, NODE_HASH, NODE_STR) and
don't call Array::new, Hash::new, String::new

J> 2) What's wrong with the code below?

J> # Replace standard new with custom new
J> class Class
J> 	alias_method :old_new,  :new

J> 	def new(*args)
J> 		result = old_new(*args)
J> 		puts "new invoked!"
J> 		return result
J> 	end
J> end

J> # Test to see if literals invoke new
J> aString = "hello"
J> anArray = [1,2,3]
J> anotherArray = Array.new

 You redefine Class::new but not Array::new, in your last line this is
 Array::new which is called.


-- 

Guy Decoux