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-// -*- C++ -*-
-
-//=============================================================================
-/**
- * @file If_Then_Else.h
- *
- * @c ACE::If_Then_Else traits template based on the @c IfThenElse
- * template described in the book "C++ Templates" by Vandevoorde and
- * Josuttis.
- *
- * $Id$
- *
- * @author Ossama Othman <ossama@dre.vanderbilt.edu>
- */
-//=============================================================================
-
-#ifndef ACE_IF_THEN_ELSE_H
-#define ACE_IF_THEN_ELSE_H
-
-namespace ACE
-{
-
- /**
- * @struct If_Then_Else
- *
- * @brief Compile-time selection of type based on a boolean value.
- *
- * This primary template selects the second or third argument based
- * on the value of the boolean first argument.
- *
- * Usage example:
- *
- * \code
- *
- * template <typename T>
- * class Foo
- * {
- * public:
- * // Set "TheType" to be the larger of "T" and "int".
- * typedef typename If_Then_Else<(sizeof (T) > sizeof (int)),
- * T,
- * int>::result_type TheType;
- * };
- *
- * \endcode
- *
- * @note This merely a forward declaration since we really only care
- * about the partial specializations below.
- */
- template <bool C, typename Ta, typename Tb>
- struct If_Then_Else;
-
- /**
- * @struct If_Then_Else
- *
- * @brief Select of type @a Ta if boolean value is @c true.
- *
- * This partial specialization selects the type @a Ta if the boolean
- * first argument is @c true.
- */
- template <typename Ta, typename Tb>
- struct If_Then_Else<true, Ta, Tb>
- {
- typedef Ta result_type;
- };
-
- /**
- * @struct If_Then_Else
- *
- * @brief Select of type @a Tb if boolean value is @c false.
- *
- * This partial specialization selects the type @a Tb if the boolean
- * first argument is @c false.
- */
- template <typename Ta, typename Tb>
- struct If_Then_Else<false, Ta, Tb>
- {
- typedef Tb result_type;
- };
-
-}
-
-#endif /* ACE_IF_THEN_ELSE_H */