From: pharrington <xenogenesis@...>
Date: 2009-11-22T08:21:21+09:00
Subject: Re: Order of evaluation and precedence

On Nov 21, 5:50 pm, Yukihiro Matsumoto <m...@ruby-lang.org> wrote:
> Hi,
>
> In message "Re: Order of evaluation and precedence"
>     on Sun, 22 Nov 2009 07:30:12 +0900, Seebs <usenet-nos...@seebs.net> writes:
>
> |Is it actually guaranteed that the output will have "a" after "b" and "c"?
> |In C, it wouldn't be.
>
> In Ruby, it should be.  It's part of spec.
>
>                                                         matz.

Well if that's the case:

irb(main):018:0> def a; puts "a"; 1 end; def b; puts "b"; 1 end; def
c; puts "c"; 1 end
=> nil
irb(main):019:0> a + (b + c)
a
b
c
=> 3
irb(main):020:0> RUBY_VERSION
=> "1.8.7"
irb(main):021:0> exit
xeno@Clover:~/projects/rss_ish$ ruby -v
ruby 1.8.7 (2009-06-12 patchlevel 174) [x86_64-linux]

I had always assumed that methods were always evaluated left to right,
order of operations having no impact on that. But if this isn't
supposed to be the case, is it a bug? Or am I misunderstanding the
issue?