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Can't overload i/o operators for private enum in namespace
Overloading operator<< for a private enumCast int to enum in C#How do I enumerate an enum in C#?Should 'using' directives be inside or outside the namespace?What is the preferred syntax for defining enums in JavaScript?How to get an enum value from a string value in Java?Get int value from enum in C#Why is “using namespace std;” considered bad practice?What is the “-->” operator in C++?Comparing Java enum members: == or equals()?What are the basic rules and idioms for operator overloading?
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I have a private enum in a class within a namespace. I'm trying to overload the I/O operators, but all I get is the compiler complaining about the Enum being private. The solution from this post did nothing to help me. Here is an isolated version of my problem.
TestClass.h
#include <iostream>
namespace Test
class TestClass
enum Enum : unsigned int a = 0, b;
friend std::ostream& operator<<(std::ostream& os, Enum e);
;
std::ostream& operator<<(std::ostream& os, TestClass::Enum e);
;
TestClass.cpp
#include "TestClass.h"
std::ostream& operator<<(std::ostream& os, Test::TestClass::Enum e)
//do it
The compiler complains about this, but does not complain when I remove the class from the namespace, so how do I get this to compile?
I'm using
g++ -c TestClass.h
to compile this
c++ enums namespaces operator-overloading friend
asked Mar 25 at 19:11
ABernittABernitt
155 bronze badges
add a comment |
I have a private enum in a class within a namespace. I'm trying to overload the I/O operators, but all I get is the compiler complaining about the Enum being private. The solution from this post did nothing to help me. Here is an isolated version of my problem.
TestClass.h
#include <iostream>
namespace Test
class TestClass
enum Enum : unsigned int a = 0, b;
friend std::ostream& operator<<(std::ostream& os, Enum e);
;
std::ostream& operator<<(std::ostream& os, TestClass::Enum e);
;
TestClass.cpp
#include "TestClass.h"
std::ostream& operator<<(std::ostream& os, Test::TestClass::Enum e)
//do it
The compiler complains about this, but does not complain when I remove the class from the namespace, so how do I get this to compile?
I'm using
g++ -c TestClass.h
to compile this
c++ enums namespaces operator-overloading friend
asked Mar 25 at 19:11
ABernittABernitt
155 bronze badges
add a comment |
I have a private enum in a class within a namespace. I'm trying to overload the I/O operators, but all I get is the compiler complaining about the Enum being private. The solution from this post did nothing to help me. Here is an isolated version of my problem.
TestClass.h
#include <iostream>
namespace Test
class TestClass
enum Enum : unsigned int a = 0, b;
friend std::ostream& operator<<(std::ostream& os, Enum e);
;
std::ostream& operator<<(std::ostream& os, TestClass::Enum e);
;
TestClass.cpp
#include "TestClass.h"
std::ostream& operator<<(std::ostream& os, Test::TestClass::Enum e)
//do it
The compiler complains about this, but does not complain when I remove the class from the namespace, so how do I get this to compile?
I'm using
g++ -c TestClass.h
to compile this
c++ enums namespaces operator-overloading friend
asked Mar 25 at 19:11
ABernittABernitt
155 bronze badges
I have a private enum in a class within a namespace. I'm trying to overload the I/O operators, but all I get is the compiler complaining about the Enum being private. The solution from this post did nothing to help me. Here is an isolated version of my problem.
TestClass.h
#include <iostream>
namespace Test
class TestClass
enum Enum : unsigned int a = 0, b;
friend std::ostream& operator<<(std::ostream& os, Enum e);
;
std::ostream& operator<<(std::ostream& os, TestClass::Enum e);
;
TestClass.cpp
#include "TestClass.h"
std::ostream& operator<<(std::ostream& os, Test::TestClass::Enum e)
//do it
The compiler complains about this, but does not complain when I remove the class from the namespace, so how do I get this to compile?
I'm using
g++ -c TestClass.h
to compile this
c++ enums namespaces operator-overloading friend
c++ enums namespaces operator-overloading friend
asked Mar 25 at 19:11
ABernittABernitt
155 bronze badges
asked Mar 25 at 19:11
ABernittABernitt
155 bronze badges
edited Mar 25 at 19:34
ABernitt
asked Mar 25 at 19:11
ABernittABernitt
155 bronze badges
asked Mar 25 at 19:11
ABernittABernitt
155 bronze badges
asked Mar 25 at 19:11
ABernittABernitt
155 bronze badges
155 bronze badges
add a comment |
add a comment |
1 Answer
1
active
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The operator in your cpp file is not the friend you declared. The friend is a member of the namespace, because the class it's declared in is a member.
So wrap the operator definition in the namespace scope too. Or fully qualify the defintion
std::ostream& Test::operator<<(std::ostream& os, Test::TestClass::Enum e)
//do it
answered Mar 25 at 19:20
StoryTellerStoryTeller
113k18 gold badges243 silver badges308 bronze badges
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The operator in your cpp file is not the friend you declared. The friend is a member of the namespace, because the class it's declared in is a member.
So wrap the operator definition in the namespace scope too. Or fully qualify the defintion
std::ostream& Test::operator<<(std::ostream& os, Test::TestClass::Enum e)
//do it
answered Mar 25 at 19:20
StoryTellerStoryTeller
113k18 gold badges243 silver badges308 bronze badges
add a comment |
The operator in your cpp file is not the friend you declared. The friend is a member of the namespace, because the class it's declared in is a member.
So wrap the operator definition in the namespace scope too. Or fully qualify the defintion
std::ostream& Test::operator<<(std::ostream& os, Test::TestClass::Enum e)
//do it
answered Mar 25 at 19:20
StoryTellerStoryTeller
113k18 gold badges243 silver badges308 bronze badges
add a comment |
The operator in your cpp file is not the friend you declared. The friend is a member of the namespace, because the class it's declared in is a member.
So wrap the operator definition in the namespace scope too. Or fully qualify the defintion
std::ostream& Test::operator<<(std::ostream& os, Test::TestClass::Enum e)
//do it
answered Mar 25 at 19:20
StoryTellerStoryTeller
113k18 gold badges243 silver badges308 bronze badges
The operator in your cpp file is not the friend you declared. The friend is a member of the namespace, because the class it's declared in is a member.
So wrap the operator definition in the namespace scope too. Or fully qualify the defintion
std::ostream& Test::operator<<(std::ostream& os, Test::TestClass::Enum e)
//do it
answered Mar 25 at 19:20
StoryTellerStoryTeller
113k18 gold badges243 silver badges308 bronze badges
edited Mar 25 at 19:25
answered Mar 25 at 19:20
StoryTellerStoryTeller
113k18 gold badges243 silver badges308 bronze badges
answered Mar 25 at 19:20
StoryTellerStoryTeller
113k18 gold badges243 silver badges308 bronze badges
answered Mar 25 at 19:20
StoryTellerStoryTeller
113k18 gold badges243 silver badges308 bronze badges
113k18 gold badges243 silver badges308 bronze badges
add a comment |
add a comment |
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