Enumerators of scoped enums are visible only within the enum, convert to other types only with a cast, and always support forward-declared because their default underlying type is int.

Alias declaration support templatization, which avoids the “::type” suffix and “typename” prefix often required to refer typedefs.

nullptr doean’t suffer from the overloading problem or the template deduction problem that 0 and NULL are susceptible to. It also improves code clarity.

Braced initialization is the most widely usable initialization syntax, which can also prevent narrowing conversions, as well as being immune to C++’s most vexing parse.

“Invisible” proxy types can cause auto to deduce the undesired type for an initializing expression, so we can adopt explicitly typed initializer idiom to force auto to deduce what we want.