From: David Alan Black <dblack@...>
Date: 2001-12-31T21:30:13+09:00
Subject: [ruby-talk:29844] Re: && vs. and

Hello --

On Mon, 31 Dec 2001, Le Wang wrote:

> Hi all,
>
> In "Programming Ruby", it was explained that the only difference
> between '&&' and 'and' is precedence, the same seems to be implied in
> the 1.4 Reference Manual.
>
> <code>
> true and puts 'test'
> true && puts 'test'
> </code>
>
> Why doesn't the second statement work?


I believe it's parsed as:

  (true && puts) 'test'

so the bare string 'test' at the end of the line causes a parse error.

Try:

  true && puts('test')

(Hmmm...  Playing around with this I'm mildly surprised that "true &&
nil" is nil, rather than false.)


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav