From: Thomas Wieczorek <wieczo.yo@...>
Date: 2008-07-30T15:39:14+09:00
Subject: Re: and and or in case

Hello Botp!

On Tue, Jul 29, 2008 at 5:25 PM, botp <botpena@gmail.com> wrote:
>
> yes,  but why the  difference in precedence for case-when and if?
> shouldn't it be more natural that they be the same?
>

Yes, I agree with you. I think when and if should act the same, this
would follow the principle of least suprise.

I think some might have missed the question:
Why DOES this work?
if 1 == 1 and 2 == 2
    puts "OK!"
end
# => "OK!"

Why DOES NOT this work?
case
    when 1 == 1 and 2 == 2
        puts "OK!"
end
 syntax error, unexpected kAND, expecting kTHEN or ':' or '\n' or ';'
    when 1 == 1 and 2 == 2
                   ^
test.rb:9: syntax error, unexpected kEND, expecting $end


The precedence seems to be handled differently with "if" and "when".

Regards, Thomas