From: james@...
Date: 2002-04-13T10:08:39+09:00
Subject: RE: not vs !, and vs &&

>
> > puts true and (! true)   # prints true
> > puts true &&  (! true)   # prints false
>
> very simple. the and has a very low precedence. there are just 3 levels,
> iirc, and this is the lowest one.
> so, the first one is equal to
>
> puts(true) && (! true)
>
> while the second one would be
>
> puts(true && (! true))

Ah so.  Thank you.  I'm still unclear about
  puts( !true )
and
  puts( not true )

The latter gives a parse/syntax error on Win2K, for 1.6.5 and  1.7.2 (my
msvc build), and 1.6.7 and 1.7.2 on redhat 6.something.  Is this a known
bug?

On a related note, are there times when the boolean methods of TrueClass
and FalseClass are prefereably to the general boolean operators?



Thanks,


James

>
> regards,
>
> nick
>