int a[] = {1, 2, 100, 200};std::vector< int> arr(a, a + 4);// 移除所有小于100的元素
arr.erase( std::remove_if( arr.begin(),  arr.end(),std::bind2nd( std::less< int>(), 100)), arr.end());

// 移除所有大于100的元素
arr.erase( std::remove_if( arr.begin(),  arr.end(),std::bind1st( std::less< int>(), 100)), arr.end());

// 移除所有大于100的元素
arr.erase( std::remove_if( arr.begin(),  arr.end(),std::bind2nd( std::greater< int>(), 100)), arr.end());

// 移除所有小于等于100的元素
arr.erase( std::remove_if( arr.begin(),  arr.end(),std::not1(std::bind2nd( std::greater< int>(), 100))), arr.end());

// not1 example
#include <iostream>     // std::cout
#include <functional>   // std::not1
#include <algorithm>    // std::count_ifstruct IsOdd {bool operator() (const int& x) const {return x%2==1;}typedef int argument_type;
};int main () {int values[] = {1,2,3,4,5};int cx = std::count_if (values, values+5, std::not1(IsOdd()));std::cout << "There are " << cx << " elements with even values.\n";return 0;
}

 1 // not2 example
 2 #include <iostream>     // std::cout
 3 #include <functional>   // std::not2, std::equal_to
 4 #include <algorithm>    // std::mismatch
 5 #include <utility>      // std::pair
 6
 7 int main () {
 8   int foo[] = {10,20,30,40,50};
 9   int bar[] = {0,15,30,45,60};
10   std::pair<int*,int*> firstmatch,firstmismatch;
11   firstmismatch = std::mismatch (foo, foo+5, bar, std::equal_to<int>());
12   firstmatch = std::mismatch (foo, foo+5, bar, std::not2(std::equal_to<int>()));
13   std::cout << "First mismatch in bar is " << *firstmismatch.second << '\n';
14   std::cout << "First match in bar is " << *firstmatch.second << '\n';
15   return 0;
16 }