From: matz@... (Yukihiro Matsumoto)
Date: 2001-05-28T16:51:27+09:00
Subject: [ruby-talk:15836] Re: newbie question

Hi,

In message "[ruby-talk:15833] newbie question"
    on 01/05/28, Elton Li <eli@waite.adelaide.edu.au> writes:

|I thought it should print 60.0 in all three cases.

Let me explain for each three cases:

|@duration = (value*60).to_i

assign 60*60 to an instance variable @duration.

|self.duration = (value*60).to_i?

invoke attribute write duration=(60*60), thus assigning an instance
variable @duration as a result.

|duration = (value*60).to_i?

assign 60*60 to a LOCAL VARIABLE "duration", thus no effect happen to
the receiver.

Hope this helps.

							matz.