C++17 STL Cookbook

Automatically handling resources with std::unique_ptr

Since C++11, the STL provides smart pointers that really help keep track of dynamic memory and its disposal. Even before C++11, there was a class called auto_ptr that was already able to do automatic memory disposal, but it was easy to use the wrong way.

However, with the C++11-generation smart pointers, we seldom need to write new and delete ourselves, which is a really good thing. Smart pointers are a shiny example of automatic memory management. If we maintain dynamically allocated objects with unique_ptr, we are basically safe from memory leaks, because upon its destruction this class automatically calls delete on the object it maintains.

A unique pointer expresses ownership of the ...