It is commonly understood that a good way to fully delete desired items from a std::vector is the erase-remove idiom.
As noted in the above link (as of the date of this posting), in code the erase-remove idiom looks like this:
int main()
{
// initialises a vector that holds the numbers from 0-9.
std::vector<int> v = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
// erase-remove idiom to completely eliminate the desired items from the vector
v.erase( std::remove( std::begin(v), std::end(v), 5 ), std::end(v) );
}
I would like to know whether a resize-remove idiom is equivalent in terms of functionality and performance to the erase-remove idiom. Or, perhaps I am missing something obvious?
Is the following resize-remove idiom equivalent to the above erase-remove idiom?
int main()
{
std::vector<int> v = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
// Is this "resize-remove" approach equivalent to the "erase-remove" idiom?
v.resize( std::remove( std::begin(v), std::end(v), 5 ) - v.begin() );
}