Differences

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--- c_enums [2018/02/04 10:07] – [Basics] rpjday
+++ c_enums [2018/02/04 12:15] (current) – [Basics] rpjday
@@ Line 1: / Line 1: @@
 ===== Overview =====
-C++11 extensions to enums.
+C++11 extensions to enums -- enum classes versus original "plain" enums (//scoped and strongly-typed// versus //unscoped//).
 ===== Basics =====
+Underlying type is ''int'':
 <code>
-enum class Color { red, green, blue };
+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]].