std::vector::erase

 

C++

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iterator erase( iterator pos ); iterator erase( const_iterator pos );	(1)	(until C++11) (since C++11)
iterator erase( iterator first, iterator last ); iterator erase( const_iterator first, const_iterator last );	(2)	(until C++11) (since C++11)

Removes specified elements from the container.

1) Removes the element at pos.

2) Removes the elements in the range [first; last).

Iterators and references to the erased elements and to the elements between them and the end of the container are invalidated.

Parameters

pos	-	iterator to the element to remove
first, last	-	range of elements to remove

Return value

iterator following the last removed element.

Example

#include <vector>
#include <iostream>
 
 
int main( )
{
    std::vector<int> c{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
    for (auto &i : c) {
        std::cout << i << " ";
    }
    std::cout << '\n';
 
    c.erase(c.begin());
 
    for (auto &i : c) {
        std::cout << i << " ";
    }
    std::cout << '\n';
 
    c.erase(c.begin()+2, c.begin()+5);
 
    for (auto &i : c) {
        std::cout << i << " ";
    }
    std::cout << '\n';
}

Output:

0 1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 6 7 8 9

Complexity

1) linear in the distance between position and last.

2) linear in distance between position and the end of the container.

See also

clear	clears the contents (public member function)