How do you delete a pointer vector?

How do you delete a pointer vector?

How to Remove Pointers from a Vector in C++

1. C++11 introduced std::unique_ptr along with other smart pointers, that wrap a normal pointer and takes care of memory management, by calling delete on the pointer in their destructors.
2. You can use std::stable_partition instead of std::remove_if , with an inverted predicate.

How do you initialize a vector to a pointer in C++?

First we initialize obj pointer using the constructor then push the pointer to the vector. obj *newObj = new obj(n); v. push_back( newObj ); Also, even with pointers we can only access the public members of the class.

Can you have a vector of pointers in C++?

You can store pointers in a vector just like you would anything else. Declare a vector of pointers like this: vector vec; The important thing to remember is that a vector stores values without regard for what those values represent.

Can a vector of pointers be used to delete objects?

By dynamically allocating a Movie object with new Movie(), you get a pointer to the new object. You do not need a second vector for the movies, just store the pointers and you can access them. But be aware that the vector will not delete your objects afterwards, which will result in a memory leak.

How to create vector of pointers to movies?

Since you are creating a vector of pointers to movies, do not forget to free the resources allocated by your movie instances OR you could use some smart pointer to deallocate the movies automatically: By dynamically allocating a Movie object with new Movie (), you get a pointer to the new object.

When to use MyClass destructor with vector pointers?

Your myClass destructor will only be called if your vector is a vector of myClass objects ( std::vector< myClass >) instead of a vector of pointers to myClass objects ( std::vector< myClass* > ).

How is a vector of pointers defined in C + +?

By dynamically allocating a Movie object with new Movie (), you get a pointer to the new object. You do not need a second vector for the movies, just store the pointers and you can access them. Like Brian wrote, the vector would be defined as