From: Christopher Dicely <cmdicely@...>
Date: 2010-02-14T08:42:55+09:00
Subject: Re: Why no ++ and --?

On Sun, Feb 7, 2010 at 7:15 PM, Sonja Elen Kisa <sonja@kisa.ca> wrote:
> "foo += 1" somehow seems less elegant or pretty as "foo++".

"foo += 1" doesn't have the same meaning as "foo++", instead, it is
equivalent to "++foo".
"foo++" is (as others have intimated in suggesting implementations)
equivalent to:
begin
  _temp = foo
  foo += 1
  _temp
end

I wouldn't expect to see postfix-increment/decrement operators added
to Ruby in any near-future version.