Example 1: remove value from vector c++
#include
#include
// using the erase-remove idiom
std::vector vec {2, 4, 6, 8};
int value = 8 // value to be removed
vec.erase(std::remove(vec.begin(), vec.end(), value), vec.end());
Example 2: c++ vector erase by value
//wiki - erase-remove idiom
// Use g++ -std=c++11 or clang++ -std=c++11 to compile.
#include // remove and remove_if
#include
#include // the general-purpose vector container
void Print(const std::vector& vec) {
for (const auto& i : vec) {
std::cout << i << ' ';
}
std::cout << '\n';
}
int main() {
// Initializes a vector that holds 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(v.begin(), v.end(), 5), v.end());
Print(v);
}
/*
Output:
0 1 2 3 4 5 6 7 8 9
0 1 2 3 4 6 7 8 9
*/
Example 3: how to remove an element from a vector by value c++
std::vector v;
// fill it up somehow
v.erase(std::remove(v.begin(), v.end(), 99), v.end());
// really remove all elements with value 99
Example 4: c++ remove element from vector
vector.erase(position) // remove certain position
// or
vector.erase(left,right) // remove positions within range
Example 5: c++ vector remove element by value
carVec.erase(std::remove_if(carVec.begin(), carVec.end(), [&id_to_delete](const Car& ele)->bool
{
return ele.getnewId() == id_to_delete;
}), carVec.end());
Example 6: remove element by value vector c++
#include
using namespace std;
int main(){
vector v;
//Insert values 1 to 10
v.push_back(20);
v.push_back(10);
v.push_back(30);
v.push_back(20);
v.push_back(40);
v.push_back(20);
v.push_back(10);
vector::iterator new_end;
new_end = remove(v.begin(), v.end(), 20);
for(int i=0;i