From: dblack@...
Date: 2002-10-15T01:43:00+09:00
Subject: Re: & operation and if statment

Hi --

On Tue, 15 Oct 2002, Robert McGovern wrote:

> I'm puzzled by the behaviour in the following run. I would expect line 2
> to not print out "ouch" because the result of the if statement is 0
> (verified online 8)
>
> $ ruby -v
> ruby 1.7.3 (2002-09-20) [i386-cygwin]
>
> $ irb
> irb(main):001:0> data = 0x00
> 0
> irb(main):002:0> puts "ouch" if (data & 0x80)
> ouch

Don't forget that 0 is true.


David

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