From: Alex Gutteridge <alexg@...>
Date: 2008-07-30T02:03:16+09:00
Subject: Re: and and or in case

On 29 Jul 2008, at 16:25, botp wrote:

> On Tue, Jul 29, 2008 at 5:58 PM, Alex Gutteridge
> <alexg@ruggedtextile.com> wrote:
>> So 'if' has the lowest precedence and any combination of and/or/ 
>> &&/|| will
>> be taken first before applying the 'if'. We can assume from your  
>> results
>> that 'case/when' has a precedence between &&/|| and and/or:
>> &&
>> ||
>> case/when
>> or
>> and
>> if
>
> yes,  but why the  difference in precedence for case-when and if?
> shouldn't it be more natural that they be the same?
>
> thanks -botp


Why? There is no why. Only 'principle of least surprise' ;)

Alex Gutteridge

Department of Biochemistry
University of Cambridge