src/base/HardFun.h

   1 /*
   2  * Copyright (C) 1996-2016 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef _SQUID_SRC_BASE_HARDFUN_H
  10 #define _SQUID_SRC_BASE_HARDFUN_H
  11
  12 /**
  13  * A functor that calls a hard-coded unary function.
  14  */
  15 template <class ReturnType, class ArgType, ReturnType (*fun)(ArgType)>
  16 struct HardFun {
  17     ReturnType operator()(ArgType arg) { fun(arg); }
  18 };
  19
  20 #endif /* _SQUID_SRC_BASE_HARDFUN_H */
  21