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cxx11-strongly-typed-enumerations.h
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1// https://en.wikipedia.org/wiki/C%2B%2B11#Strongly_typed_enumerations
2
3// #1
4 enum class Enumeration {
5 Val1,
6 Val2,
7 Val3 = 100,
8 Val4 // = 101
9};
10
11// #2
12 enum class Enum2 : unsigned int {Val1, Val2};
13
14// #3
15 enum Enum3 : unsigned long {Val1 = 1, Val2};
16
17// #4
18//enum Enum1; // Illegal in C++03 and C++11; the underlying type cannot be determined.
19 enum Enum4 : unsigned int; // Legal in C++11, the underlying type is explicitly specified.
20 enum class Enum5; // Legal in C++11, the underlying type is int.
21
22 enum class Enum6 : unsigned int; // Legal in C++11.
23//enum Enum2 : unsigned short; // Illegal in C++11, because Enum2 was previously declared with a different underlying type.
int
int int y int
Definition: cxx11-lambda-functions-and-expressions.h:4
Enum3
Enum3
Definition: cxx11-strongly-typed-enumerations.h:15
Val1
@ Val1
Definition: cxx11-strongly-typed-enumerations.h:15
Val2
@ Val2
Definition: cxx11-strongly-typed-enumerations.h:15
Enum2
Enum2
Definition: cxx11-strongly-typed-enumerations.h:12
Enumeration
Enumeration
Definition: cxx11-strongly-typed-enumerations.h:4
Enumeration::Val3
@ Val3
Enumeration::Val4
@ Val4