【STL】C++ 使用erase-remove

我想删除所有将.first值设置为4的对.

stopPoints.erase(std::remove_if(stopPoints.begin(),stopPoints.end(),[&](const stopPointPair stopPoint)-> bool { return stopPoint.first == 4; }));

#include  // the general-purpose vector container
#include 
#include  // remove and remove_if
 
bool is_odd(int i)
{
  return (i % 2) != 0;  
}
 
void print(const std::vector &vec)
{
  for (const auto& i: vec) 
    std::cout << i << ' '; 
  std::cout << std::endl;
}
 
int main()
{
  // initialises a vector that holds the numbers from 0-9.
  std::vector v = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
  print(v);
 
  // removes all elements with the value 5
  v.erase( std::remove( std::begin(v), std::end(v), 5 ), std::end(v) ); 
  print(v); 
 
  // removes all odd numbers
  v.erase( std::remove_if(std::begin(v), std::end(v), is_odd), std::end(v) );
  print(v);
 
  return 0;  
}