Re: [boost] Possible patch to format for Borland BCB5

From: Beman Dawes (bdawes_at_[hidden])
Date: 2002-12-01 15:23:37

At 08:11 PM 11/28/2002, David Abrahams wrote:

 >> AFAIK, Metrowerks is correct, and the other compilers intend to detect
 >these errors in the future.
 >>
 >> The fix is usually to add qualification. For example,
 >foo::out_of_range_bit.
 >
 >The fix is usually to make sure that the appropriate declaration of a
 >non-dependent name is visible before the name is used. Extra
 >qualification doesn't usually help AFAICT.
 >
 >Oh, I guess that if the name is a member of a base class, then the fix
 >is to write ``this->member_name'' or ``BaseClass::member_name''
 >instead of just ``member_name''. That can be viewed as adding
 >qualification.

Yes, that was the case that came up in other libraries.

 > However, that doesn't _appear_ to be the problem in the
 >case below, and in any case I recomment using ``this->'' when possible
 >because it's more reliable.

Hum... I'll take your word for it, but to tell the truth I have trouble 
understanding what either ``this->member_name'' or 
`BaseClass::member_name'' adds. And the format library case wasn't a member 
name at all, it was an enum name, IIRC.

I guess I need a C++ for dummies level description of why these names are 
not visible, and why adding this-> or qualification makes the names 
visible.

--Beman