What are the best practices for using collections in C++11?

What are the best practices for using collections in C++11?

In C++11, it's best to use std::vector for dynamic arrays, std::list for linked lists, and std::unordered_map for key-value pairs. Always prefer auto for type inference.

When should I use std::set instead of std::unordered_set?

Use std::set when you need ordered elements and std::unordered_set for faster access with no order requirement.

How can I avoid memory leaks when using collections?

Utilize smart pointers like std::shared_ptr or std::unique_ptr to manage memory automatically and avoid leaks.

What are the performance implications of using different collections?

Each collection has different performance characteristics. For example, std::vector has fast access but slow insertions at the beginning, while std::list has fast insertions but slower access.

Can you give examples of when to use std::array?

Use std::array when you know the size of the array at compile time and want the benefits of a fixed-size array with the convenience of STL.