From: Vincent Fourmond <vincent.fourmond@9online.fr>
Date: 2006-07-26T19:02:15+09:00
Subject: Re: something strange about assignement


  Hello !

> 
> valid_path=valid_string and (/^\/.*$/ === s)
> 
> s being = to "path not starting with /" (invalid path)*
> 
> i get valid_path= true iff alid_string=true
> 
> the test "" doesn't take into account, why ???
> 
> because i've changed slightly the syntax to :
> 
> valid_path=(valid_string and (/^\/.*$/ === s))
> 
> (an enclosing parentheses couple more)
> 
> and then, rubically, i get the good result ;-)
> 
> any reason for such a behaviour ???

  and has got a much lower priority than anything else (including the
assignement), so that your first statement is interpreted as

(valid_path=valid_string) and (/^\/.*$/ === s)

  You wouldn't get this problem with the && operator --  and as you did
if you parenthize correctly.

  Enjoy

	Vince