sustaining_gazes/lib/local/CamCom/comet/stl.h
2016-05-20 16:48:43 -04:00

69 lines
1.9 KiB
C++

/** \file
Provide STL extensions.
*/
/*
* Copyright © 2001 Sofus Mortensen
* Copyright © 2013 Alexander Lamaison
*
* This material is provided "as is", with absolutely no warranty
* expressed or implied. Any use is at your own risk. Permission to
* use or copy this software for any purpose is hereby granted without
* fee, provided the above notices are retained on all copies.
* Permission to modify the code and to distribute modified code is
* granted, provided the above notices are retained, and a notice that
* the code was modified is included with the above copyright notice.
*
* This header is part of Comet version 2.
* https://github.com/alamaison/comet
*/
#ifndef COMET_STL_H
#define COMET_STL_H
#include <comet/config.h>
#include <functional>
// add identity, select1st, and select2nd.
#if !defined(__SGI_STL_PORT) && !defined(__MINGW32__)
namespace std {
/** \internal
*/
template<typename T> struct identity : public unary_function<T, T> {
T operator()(const T& t) { return t; }
};
/** \internal
*/
template<typename T> struct select1st : public unary_function<typename T::first_type, T> {
typename T::first_type operator()(const T& t) { return t.first; }
};
/** \internal
*/
template<typename T> struct select2nd : public unary_function<typename T::second_type, T> {
typename T::second_type operator()(const T& t) { return t.second; }
};
}
#else
#include <functional>
#endif
template<typename T> class delete_fun : public std::unary_function<T, void> {
public:
void operator()(T& x) { delete x; }
};
template<typename T> class delete2nd_fun : public std::unary_function<T, void> {
public:
void operator()(T& x) { delete x.second; }
};
template<typename T> class delete1st_fun : public std::unary_function<T, void> {
public:
void operator()(T& x) { delete x.first; }
};
#endif