[boost] typeof

From: Arkadiy Vertleyb (vertleyb_at_[hidden])
Date: 2004-09-06 11:47:31

Hi all,

The new version of typeof library can be found at:

http://groups.yahoo.com/group/boost/files/typeof.zip

This version contains the following improvements:

1) The compilation speed is significantly improved for simple types by not
instantiating unnecessary templates;

2) Support for integral template parameters has been added so that, for
example, a template:

template<class T, unsigned int ui, bool b, short s> class foo;

can be registered like this:

BOOST_REGISTER_TEMPLATE_X(foo, (class)(unsigned int)(bool)(short));

(_X stands for "extra" or "extended".  Any naming improvement suggestions
are welcome)

A template parameter can be described as:

class
typename
[unsigned] char
[unsigned] short
[unsigned] int
[unsigned] long
unsigned
bool

3) The vector size limit is now controled by BOOST_TYPEOF_LIMIT_SIZE.  If it
is bigger than BOOST_MPL_LIMIT_VECTOR_SIZE, the additional vector
definitions are generated automatically (using the method suggested and
explained by Aleksey Gurtovoy).

(There appears to be one more limitation that I wasn't aware of.  It is
related to the max number of template parameters allowed by the compiler.
For example, VC7.1 appears to have a limit of 64)

4) All is compiled against current Boost CVS.

Any comments are most welcome.

Regards,
Arkadiy