Re: [Boost-users] detect if a type has a size_t member

Subject: Re: [Boost-users] detect if a type has a size_t member
From: Roman Perepelitsa (roman.perepelitsa_at_[hidden])
Date: 2009-07-29 08:16:04

2009/7/29 Mathias Gaunard <mathias.gaunard_at_[hidden]>

> 1) struct S {
>>  static const size_t maxsize =5;
>> };
>>
>> 2) struct S {
>>  static size_t maxsize;
>> };
>>
>> 3) struct S {
>>  size_t maxsize;
>> };
>>
>>
>> Applied to S, the code doesn't compile in 1 and returns false in 2.
>>
>> Is there a fix that can make it work for 1, 2 and 3 ?
>>
>
> No.
> Static members and non-static ones are very different things, and each
> requires usage of a different macro.
> BOOST_HAS_STATIC_MEMBER_DATA and BOOST_HAS_MEMBER_DATA.
>

It explains why 2 returns false, but does not explain why 1 does not
compile.

Roman Perepelitsa.