3 // Copyright (C) 2005-2023 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the terms
7 // of the GNU General Public License as published by the Free Software
8 // Foundation; either version 3, or (at your option) any later
11 // This library is distributed in the hope that it will be useful, but
12 // WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
21 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
23 // Permission to use, copy, modify, sell, and distribute this software
24 // is hereby granted without fee, provided that the above copyright
25 // notice appears in all copies, and that both that copyright notice
26 // and this permission notice appear in supporting documentation. None
27 // of the above authors, nor IBM Haifa Research Laboratories, make any
28 // representation about the suitability of this software for any
29 // purpose. It is provided "as is" without express or implied
33 * @file erase_if_fn.hpp
34 * Contains traits for a random regression test
35 * for a specific container type.
38 #ifndef PB_DS_REGRESSION_TEST_ERASE_IF_FN_HPP
39 #define PB_DS_REGRESSION_TEST_ERASE_IF_FN_HPP
50 struct regression_test_erase_if_fn
53 typedef const T& const_reference;
56 typedef bool result_type;
57 typedef T argument_type;
60 operator()(const_reference r_t) const
62 return (r_t.length() == 0 ||
63 static_cast<size_t>(*((r_t).begin())) % 2 == 1);
67 template<typename Hd, class Tl>
68 struct regression_test_erase_if_fn<std::pair<Hd, Tl> >
71 typedef const std::pair<Hd, Tl>& const_reference;
72 typedef regression_test_erase_if_fn<Hd> hd_erase_if_fn;
73 typedef regression_test_erase_if_fn<Tl> tl_erase_if_fn;
76 typedef bool result_type;
77 typedef std::pair<Hd, Tl> argument_type;
80 operator()(const_reference r_t) const
82 return (hd_erase_if_fn()(r_t.first) && tl_erase_if_fn()(r_t.second));
87 } // namespace __gnu_pbds