Claw
1.7.3
meta
is_base_of.hpp
Go to the documentation of this file.
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/*
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CLAW - a C++ Library Absolutely Wonderful
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CLAW is a free library without any particular aim but being useful to
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anyone.
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Copyright (C) 2005-2011 Julien Jorge
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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contact: julien.jorge@gamned.org
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*/
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#ifndef __CLAW_IS_BASE_OF_HPP__
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#define __CLAW_IS_BASE_OF_HPP__
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namespace
claw
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{
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namespace
meta
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{
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template
<
typename
Base,
typename
Derived>
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struct
is_base_of
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{
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private
:
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static
Derived* m_d;
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private
:
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static
char
check( Base* );
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static
long
check( ... );
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public
:
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enum
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{
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result = (
sizeof
(check( m_d )) ==
sizeof
(
char
) )
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};
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};
// struct is_base_of [false]
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}
// namespace meta
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}
// namespace claw
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#endif // __CLAW_IS_BASE_OF_HPP__
claw::meta::is_base_of
This predicate tells if a class is derived from an other class.
Definition:
is_base_of.hpp:49
claw
This is the main namespace.
Definition:
algorithm.hpp:33
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