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2. How does c++ std::vector work? - Stack Overflow

   stackoverflow.com/questions/3167272

   When adding an element to a std::vector which is already full then the vector is resized which involves a procedure of allocating a new, larger memory area, moving the existing data to the new vector, deleting the old vector space, and then adding the new element. std::vector is a collection class in the Standard Template Library.

3. c++ - Vector of Vectors to create matrix - Stack Overflow

   stackoverflow.com/questions/12375591

   You have to initialize the vector of vectors to the appropriate size before accessing any elements. You can do it like this: // assumes using std::vector for brevity. vector<vector<int>> matrix(RR, vector<int>(CC)); This creates a vector of RR size CC vectors, filled with 0. edited Jan 2, 2018 at 16:26.

4. c++ - Initializing a two-dimensional std::vector - Stack Overflow

   stackoverflow.com/questions/17663186

   8. The recommended approach is to use a fill constructor to initialize a two-dimensional vector with a given default value: std::vector<std::vector<int>> fog(M, std::vector<int>(N, default_value)); where, M and N are dimensions for your two-dimensional vector. edited Feb 6, 2023 at 2:33. Peter Mortensen.

5. c++ - How do I print out the contents of a vector? - Stack...

   stackoverflow.com/questions/10750057

   A much easier way to do this is with the standard copy algorithm: . #include <iostream> #include <algorithm> // for copy #include <iterator> // for ostream_iterator # ...

6. Iterate through a C++ Vector using a 'for' loop - Stack Overflow

   stackoverflow.com/questions/12702561

   I am new to the C++ language. I have been starting to use vectors, and have noticed that in all of the code I see to iterate though a vector via indices, the first parameter of the for loop is always

7. c++ - How to find out if an item is present in a std::vector? -...

   stackoverflow.com/questions/571394

   Yeah - finally. Such a shame that the committee has been so resistant for so long to people suggesting we need just a "has" or "contains" function for containers. std::map only got contains with C++20, and no love for vector. –

8. How to navigate through a vector using iterators? (C++)

   stackoverflow.com/questions/2395275

   Vector's iterators are random access iterators which means they look and feel like plain pointers. You can access the nth element by adding n to the iterator returned from the container's begin() method, or you can use operator [].

9. c++ - When should I use vector::at instead of vector::operator...

   stackoverflow.com/questions/9376049

   117. I'd say the exceptions that vector::at() throws aren't really intended to be caught by the immediately surrounding code. They are mainly useful for catching bugs in your code. If you need to bounds-check at runtime because e.g. the index comes from user input, you're indeed best off with an if statement.

10. c++ - How can I get the maximum or minimum value in a vector? -...

    stackoverflow.com/questions/9874802

    As an iterator is like pointers (or you can say pointer is a form of iterator), you can use a * before it to get the value. So as per the problem you can get the maximum element in an vector as: int max=*max_element(cloud.begin(), cloud.end()); It will give you the maximum element in your vector "cloud". Hope it helps.

11. Why use a new call with a C++ 'vector'? - Stack Overflow

    stackoverflow.com/questions/48757030

    std::vector<int> v v is an object on the stack, that dynamically allocates memory in order to store elements. std::vector<int>* v = new std::vector<int> v is a pointer to a dynamically allocated object, that dynamically allocates memory in order to store elements. As said already, you need to explictly call delete to destroy this object.