===== Overview =====

C++11 extensions to enums -- enum classes versus original "plain" enums (//scoped and strongly-typed// versus //unscoped//).

===== Basics =====

Underlying type is ''int'':

<code>
enum struct|class Color { red, green, blue };
...
Color::red
Color::green
</code>

Possible definitions:

<code>
Warning w1 = Warning::red;
enum Warning w2 = Warning::green;
enum class Warning w3 = Warning::blue; // no
</code>

===== Treating scoped enums like ints =====

Stack Overflow explanation [[https://stackoverflow.com/questions/8357240/how-to-automatically-convert-strongly-typed-enum-into-int|here]].

See source for ''ios_base.h'' [[https://github.com/gcc-mirror/gcc/blob/master/libstdc%2B%2B-v3/include/bits/ios_base.h|here]].