Re: [boost] static_assert.hpp

From: Andrei Alexandrescu (andrewalex_at_[hidden])
Date: 2001-11-24 13:18:15

> I use
>
> typedef char error_message_here[expr];
>
> Not as elegant as a macro and doesn't use int2type, granted. ;-)

Some compilers would accept 0-sized arrays. Some others accept -1-sized
arrays.

By the way, in the end I settled on:

#define STATIC_ASSERT_MSG(b, msg) \
    { \
        struct msg \
        { \
            msg(::boost::loki::int2type<true>) {} \
        } msg((::boost::loki::int2type<(b) != 0>())); \
    }

which works like a charm. The way things seem to be, though, it looks like
nobody would be interested in adding something like that to boost.

Andrei