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BinaryComposeFunctionAdapter< OP1, OP2, OP3 > Class Template Reference

Represents the binary compose function object adapter. More...

#include <OpenMS/CONCEPT/BinaryComposeFunctionAdapter.h>

Inheritance diagram for BinaryComposeFunctionAdapter< OP1, OP2, OP3 >:
binary_function

List of all members.

Public Member Functions

 BinaryComposeFunctionAdapter (const OP1 &o1, const OP2 &o2, const OP3 &o3)
 constructor
OP1::result_type operator() (const typename OP2::argument_type &x, const typename OP3::argument_type &y) const
 function call

Private Attributes

OP1 op1_
OP2 op2_
OP3 op3_

Detailed Description

template<class OP1, class OP2, class OP3>
class OpenMS::BinaryComposeFunctionAdapter< OP1, OP2, OP3 >

Represents the binary compose function object adapter.

compose_f_gx_hy_t compose function adapter processes the result of two unary operations that use different elements as parameters. For more details, please refer to the book "The C++ Standart Library" by Nicolay Josuttis. This class is implemented in order to reduce (substitute) the usage of user defined functors.

Here is the example of compose_f_gx_hy_t usage with std::mem_ref_fun function. to sort elements in container based on the certain element's property. 

#include <string>
#include <vector>
using namespace std;

class Element {
public:
  Element(const string& a) : _a(a) {}
  const string& getA() const { return _a; }
private:
  string _a;
};

int main(int argc, char** argv) {

  Element a("Matthias"), b("Marcel"), c("Anton"), d("Henner");

  vector<Element> elements;
  elements.push_back(a);
  elements.push_back(b);
  elements.push_back(c);
  elements.push_back(d);

  // the below function sorts elements based on the &Element::getA result value
  sort(elements.begin(), elements.end(),
              binaryCompose(
                      less<string>(),
                      mem_fun_ref(&Element::getA),
                      mem_fun_ref(&Element::getA)));
  return 0;
}

Copyright 1999 by Addison Wesley Longman, Inc. and Nicolai M. Josuttis. All rights reserved.

Permission to use, copy, modify and distribute this software for personal and educational use is hereby granted without fee, provided that the above copyright notice appears in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the names of Addison Wesley Longman or the author are not used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. Addison Wesley Longman and the author make no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty.

ADDISON WESLEY LONGMAN AND THE AUTHOR DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ADDISON WESLEY LONGMAN OR THE AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

Constructor & Destructor Documentation

BinaryComposeFunctionAdapter ( const OP1 &  o1,
const OP2 &  o2,
const OP3 &  o3 
) [inline]

constructor

Member Function Documentation

OP1::result_type operator() ( const typename OP2::argument_type &  x,
const typename OP3::argument_type &  y 
) const [inline]

function call

References BinaryComposeFunctionAdapter< OP1, OP2, OP3 >::op1_, BinaryComposeFunctionAdapter< OP1, OP2, OP3 >::op2_, and BinaryComposeFunctionAdapter< OP1, OP2, OP3 >::op3_.

Member Data Documentation

OP1 op1_ [private]

Referenced by BinaryComposeFunctionAdapter< OP1, OP2, OP3 >::operator()().

OP2 op2_ [private]

Referenced by BinaryComposeFunctionAdapter< OP1, OP2, OP3 >::operator()().

OP3 op3_ [private]

Referenced by BinaryComposeFunctionAdapter< OP1, OP2, OP3 >::operator()().

OpenMS / TOPP release 1.10.0 Documentation generated on Thu Mar 7 2013 09:42:51 using doxygen 1.7.1