confusion with local variable assignment

X-Received	by 10.67.30.197 with SMTP id kg5mr11300580pad.36.1397222679168; Fri, 11 Apr 2014 06:24:39 -0700 (PDT)
X-Received	by 10.50.178.196 with SMTP id da4mr106999igc.17.1397222679079; Fri, 11 Apr 2014 06:24:39 -0700 (PDT)
Path	csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!news.glorb.com!ur14no6276453igb.0!news-out.google.com!gi6ni382igc.0!nntp.google.com!l13no5585066iga.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups	comp.lang.ruby
Date	Fri, 11 Apr 2014 06:24:38 -0700 (PDT)
Complaints-To	groups-abuse@google.com
Injection-Info	glegroupsg2000goo.googlegroups.com; posting-host=223.232.204.9; posting-account=Ut8QRgkAAADwW5Zo_w-Ncx7hJ1pmaMn8
NNTP-Posting-Host	223.232.204.9
User-Agent	G2/1.0
MIME-Version	1.0
Message-ID	<3d3ebc5f-5c80-459e-963e-a3ffbea1dcec@googlegroups.com> (permalink)
Subject	confusion with local variable assignment
From	Arup Rakshit <tuka.08@gmail.com>
Injection-Date	Fri, 11 Apr 2014 13:24:39 +0000
Content-Type	text/plain; charset=ISO-8859-1
Xref	csiph.com comp.lang.ruby:6954

Show key headers only | View raw

When you write

a = b # error. As b is not defined as a method or local variable

But if you try - 

a = a or b = b, MRI parse it without error. How the `a` or `b` on the right side is allowed, where as I didn't define them earlier.

Thanks

Back to comp.lang.ruby | Previous | Next — Next in thread | Find similar

Thread

confusion with local variable assignment Arup Rakshit <tuka.08@gmail.com> - 2014-04-11 06:24 -0700
  Re: confusion with local variable assignment Robert Klemme <shortcutter@googlemail.com> - 2014-04-11 19:41 +0200
    Re: confusion with local variable assignment Arup Rakshit <tuka.08@gmail.com> - 2014-04-11 10:51 -0700
      Re: confusion with local variable assignment Robert Klemme <shortcutter@googlemail.com> - 2014-04-12 10:38 +0200

csiph-web