From: Martin Weber <Ephaeton@...>
Date: 2004-01-14T03:09:58+09:00
Subject: Re: Warnings on assignments in conditionals?

Oops, accidentally replied in private:


On Wed, Jan 14, 2004 at 02:40:16AM +0900, David Heinemeier Hansson wrote:
> I consider the following statements to be perfectly legit (although 
> perhaps slightly ambigious) and Ruby does obey, but throws this 
> mandating warning. Am I just being paranoid or is Ruby forcing a style 
> upon me :)?

It is. The 'gcc' style.. an additional pair of parens around the 
expression et voila (funny enough, you need two)
  
irb(main):001:0> if a = 1 then true else false end
(irb):1: warning: found = in conditional, should be == 
=> true
irb(main):002:0> if (a=1) then true else false end
(irb):2: warning: found = in conditional, should be ==
=> true
irb(main):003:0> if ((a=1)) then true else false end
=> true

Regards,

-Martin


..to which David replied:

> >It is. The 'gcc' style.. an additional pair of parens around the
> >expression et voila (funny enough, you need two)
>
> Pretty interesting. Anyone has the full story on why?
>
> / David

Sorry.

-Martin