What is a local class and why can it be useful

What is a local class? Why can it be useful?

Answer:

local class is a class defined within the scope of a function -- any function, whether a member function or a free function.

For example:

// Example 2: Local class

int f()

{

class LocalClass { // ... };

// ... };

Like nested classes, local classes can be a useful tool for managing code dependencies.