std::logical_not is a functor that performs a operator! on an element.


#include <algorithm>

#include <cassert>

#include <functional>

#include <vector>



int main()

{

  std::vector<bool> v; //Prefer std::bitset of boost::dynamic bitset

  v.push_back(true);

  v.push_back(false);



  assert(v.size() == 2);

  assert(v[0] == true );

  assert(v[1] == false);



  std::vector<bool> w; //Prefer std::bitset of boost::dynamic bitset



  //Use std::logical_not on the elements of v,

  //append the result to w

  std::transform(

    v.begin(),

    v.end(),

    std::back_inserter(w),

    std::logical_not<bool>());



  //Check if std::logical_not works as expected

  assert(w.size() == 2);

  assert(w[0] == false);

  assert(w[1] == true );

}

External links

cplusplus.com page about std::logical_not

Go back to Richel Bilderbeek's C++ page.

Go back to Richel Bilderbeek's homepage.

(C++) std::logical_not

External links