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std::list.insert inserts an element before the iterator position. How can I insert an element after an iterator position.
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Using insert(pos_iter,ele_num,ele) : insert() is used to insert the elements at any position of list. . This function takes 3 elements, position, number of elements to insert and value to insert. If not mentioned, number of elements is default set to 1.
To add elements to vector, you can use push_back() function. push_back() function adds the element at the end of this vector. Thus, it increases the size of vector by one.
Appending to a vector means adding one or more elements at the back of the vector. The C++ vector has member functions. The member functions that can be used for appending are: push_back(), insert() and emplace(). The official function to be used to append is push_back().
Adding to the front of a vector means moving all the other elements back. If you want (to constantly perform) front insertion, you might really want to use list or deque . The only way to know how to speed up your program is with profiling. You should just program first then profile it and find out.
that's what list::insert does. Just increment your iterator before inserting your value:
if (someIterator != someList.end()) {
someIterator++;
}
someList.insert(someIterator, someValue);
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