From: Sard Aukary <sardaukary@...>
Date: 2006-08-07T05:38:20+09:00
Subject: Method behaviour

Some methods like

def change(word)
	word[0]='e'
end
a="affluent"
puts a
change(a)
puts a

alter the original object outside of the method, where as others don't.

def change(word)
	word="fish"
end
a="cow"
puts a
change(a)
puts a


Why the change in behaviour, what determines it?  Is the only way I can 
write methods that change the original object by using the Ruby methods 
that do this?

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