[v3] Remove uses of <cstddef> as an implementation detail

[Gennaro Prota]

On 07/06/2010 19.24, Paolo Carlini wrote:
> On 06/07/2010 06:54 PM, Gennaro Prota wrote:
>> On 03/06/2010 21.19, Paolo Carlini wrote:
>>> Hi,
>>>
>>> this, largely boring patch essentially does what the Subject says, thus
>>> following the spirit of LWG 1250, avoiding uses of C-style NULLs,
>>> trimming the size of the C++ headers. I took also the occasion to add
>>> std::nullptr_t, in C++0x mode.
>>
>> Hi all,
>>
>> I'm just turning up in these parts so my apologies if this has
>> been discussed and decided upon earlier, but why would one want
>> such a modification? Just to save on the amount of parsed code?
> See the quick summary above. In general we have been untangling and
> cleaning up the dependencies in the headers for a while.

I saw the summary but was perplexed, especially about removing
NULL; why giving up using it rather than just defining it in a
"sub-header", as done for std::size_t and std::ptrdiff_t?

Or do you mean that, then, you'd have a dependency on the
sub-header, whereas using 0 directly you haven't any?

(I'm just worrying a bit about code clarity; for this case but
also for the future, if the guideline is that anything not
indispensable is better removed)

-- 
   Gennaro Prota         |           name.surname yahoo.com
     Breeze C++ (preview): <https://sourceforge.net/projects/breeze/>
     Do you need expertise in C++?   I'm available.
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