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Reply-To: Marcus Boerger <helly@php.net>
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Subject: Re: [PHP-DEV] what happened to that new isset() like language
From: helly@php.net (Marcus Boerger)

Hello Robert,

Saturday, July 10, 2004, 3:12:09 AM, you wrote:

> On Fri, 2004-07-09 at 19:54, Marcus Boerger wrote:
>> Hello Robert,
>> 
>>  coalesce would be:
>> 
>>  "coalesce" "(" <var> ( "," <var> )* [ "," <expr> ] ")"
>> 
>> and would also require heay engine patching. I am speaking of a
>> really major change here, i already looked into what it would
>> need month's ago. Since the operator i proposed is different from
>> the coalesce functionality many sql developers know i see that as
>> a definitive no. But again if you give the engine a try :-)

> Sorry, I thought I was following the thread quite thoroughly, but I
> missed the part until earlier today where the functionality would
> involve shortcutting expression evaluation if a non-null or set value
> was found. Obviously (I think -- correct me if I'm wrong) without the
> shortcutting feature, implementation would be simplistic.


The problem here is computing the jump addresses and targets needed.

Best regards,
 Marcus                            mailto:helly@php.net