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- /*
- *
- * Copyright (c) 1994
- * Hewlett-Packard Company
- *
- * Permission to use, copy, modify, distribute and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation. Hewlett-Packard Company makes no
- * representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied warranty.
- *
- */
-
- #ifndef PROJECTN_H
- #define PROJECTN_H
-
- #include <function.h>
-
- template <class T, class U>
- struct select1st : public unary_function<T, U> {
- const U& operator()(const T& x) const { return x.first; }
- };
-
- template <class T, class U>
- struct ident : public unary_function<T, U> {
- const U& operator()(const T& x) const { return x; }
- };
-
- #endif
-
-
-