From: Subbu <subramani.athikunte@...>
Date: 2008-03-11T14:29:55+09:00
Subject: Re: and statement

On Mar 10, 4:40 pm, Justin Collins <justincoll...@ucla.edu> wrote:
> Subbu wrote:
> > On Mar 4, 1:18 pm, yermej <yer...@gmail.com> wrote:
>
> >> On Mar 4, 8:23 am, Lionel Bouton <lionel-subscript...@bouton.name>
> >> wrote:
>
> >>> 7stud -- wrote:
>
> >>>> Subbu wrote:
>
> >>>>> Thank you so much. I looked up 'and' && operands in the PickAxe book
> >>>>> and this is what it says:
> >>>>> "The 'and' and && operators evaluate their first operand. If false,
> >>>>> the expression returns the value of the first operand; otherwise, the
> >>>>> expression returns the value of the second operand"
>
> >>>> Which doesn't appear to be true.   Look at this:
>
> >>>> result = (x=20)
> >>>> puts result          #20
>
> >>>> result = true and x=20
> >>>> puts result        #true
>
> >>> Precedence...
>
> >>> result = (true and x = 20)
>
> >> Or:
>
> >> result = true && x = 20
>
> >> The precedence is the only difference between 'and' and '&&'.
>
> > Does that mean = has higher precedence than 'and'?
>
> Yes.
>
> http://phrogz.net/ProgrammingRuby/language.html#table_18.4

Great. Thanks.