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The C and C++ Include Header Files

cat -n /usr/include/c++/15/ext/pb_ds/detail/list_update_policy/sample_update_policy.hpp

     1	// -*- C++ -*-
     2	
     3	// Copyright (C) 2005-2025 Free Software Foundation, Inc.
     4	//
     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
     9	// version.
    10	
    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.
    15	
    16	// Under Section 7 of GPL version 3, you are granted additional
    17	// permissions described in the GCC Runtime Library Exception, version
    18	// 3.1, as published by the Free Software Foundation.
    19	
    20	// You should have received a copy of the GNU General Public License and
    21	// a copy of the GCC Runtime Library Exception along with this program;
    22	// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    23	// <http://www.gnu.org/licenses/>.
    24	
    25	// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
    26	
    27	// Permission to use, copy, modify, sell, and distribute this software
    28	// is hereby granted without fee, provided that the above copyright
    29	// notice appears in all copies, and that both that copyright notice
    30	// and this permission notice appear in supporting documentation. None
    31	// of the above authors, nor IBM Haifa Research Laboratories, make any
    32	// representation about the suitability of this software for any
    33	// purpose. It is provided "as is" without express or implied
    34	// warranty.
    35	
    36	/**
    37	 * @file sample_update_policy.hpp
    38	 * Contains a sample policy for list update containers.
    39	 */
    40	
    41	#ifndef PB_DS_SAMPLE_UPDATE_POLICY_HPP
    42	#define PB_DS_SAMPLE_UPDATE_POLICY_HPP
    43	
    44	namespace __gnu_pbds
    45	{
    46	  /// A sample list-update policy.
    47	  struct sample_update_policy
    48	  {
    49	    /// Default constructor.
    50	    sample_update_policy();
    51	
    52	    /// Copy constructor.
    53	    sample_update_policy(const sample_update_policy&);
    54	
    55	    /// Swaps content.
    56	    inline void
    57	    swap(sample_update_policy& other);
    58	
    59	  protected:
    60	    /// Metadata on which this functor operates.
    61	    typedef some_metadata_type metadata_type;
    62	
    63	    /// Creates a metadata object.
    64	    metadata_type
    65	    operator()() const;
    66	
    67	    /// Decides whether a metadata object should be moved to the front
    68	    /// of the list. A list-update based containers object will call
    69	    /// this method to decide whether to move a node to the front of
    70	    /// the list. The method shoule return true if the node should be
    71	    /// moved to the front of the list.
    72	    bool
    73	    operator()(metadata_reference) const;
    74	  };
    75	}
    76	#endif