From: matz@... (Yukihiro Matsumoto)
Date: 2000-12-23T03:08:50+09:00
Subject: [ruby-talk:7972] Re: defined? problem?

Hi,

In message "[ruby-talk:7956] Re: defined? problem?"
    on 00/12/23, hal9000@hypermetrics.com <hal9000@hypermetrics.com> writes:

|A fair answer. But it forces me to use my very tired brain...

People on ruby-talk force me everyday.  Let's share my feelin'
Using one's brain is good anyway. ;-)

|foo
|x if y
|bar
|
|is seen in the order foo, x, y bar -- but if executed, it would be
|in the order foo, y, x, bar. A part of me says that in the case of a
|"reversed" construct like an if-modifier, the rule should be reversed
|(unexecuted stuff in "x" should not affect "y").
|
|Does this concept cause any problems?

What if x is a really big statement like begin?

  begin
    ... 100 lines ...
  end if y

I'd surprise if y affect x.  I'd advise to concentrate on appearing
order.

Plus, I have implementation restriction, which may be avoided by
tweaking the parser.

|Is this at all related to the discussion a few weeks back about a
|begin-end block with a while modifier? I didn't follow that one
|closely.

Not really.

							matz.