Re: Has this always been the case?
| From: | Stuart Dallas | Date: | Fri, 31 May 2013 11:25:59 +0000 |
| Subject: | Re: Has this always been the case? | ||
| References: | 1 2 3 4 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-321296@lists.php.net to get a copy of this message | ||
On 31 May 2013, at 12:17, shiplu <shiplu.net@gmail.com> wrote:
> On Fri, May 31, 2013 at 5:12 PM, Stuart Dallas <stuart@3ft9.com> wrote:
>> That is not entirely correct. It must be a literal value. The expression
>> 'a'.'b' is a constant value.
>> I may be being overly picky here, but I think it's an important distinction.
>>
>
> I thought 'a'. 'b' is a constant expression and 'ab' is a
> constant value. Correct me if I am wrong.
You're correct that 'a'.'b' is a constant expression, but I wouldn't
call 'ab' a constant value, it's a literal [1]. While "constant value"
makes logical sense there is a long history of agreed terminology for these things and you will find
that using it will enable smoother communication with fellow developers.
Initial values of class constants and member variables must be literals as they are defined not
evaluated.
-Stuart
[1] http://en.wikipedia.org/wiki/Literal_(computer_programming)
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/