Error C2676 binary '<<': 'std::ostream' does not define this operator or a conversion to...

I don't understand the compilation error C2676

for the below code

#ifndef __VEC_3D_H__

#define __VEC_3D_H__



#include <vector>

#include <cmath>



namespace Internal

{

    /** very simple 3D vector/ point */

    class Vec3D

    {

    public:

        float mX;

        float mY;

        float mZ;



        /// null constructor

        Vec3D(void) {}



        /// construct from data

        Vec3D(float x, float y, float z) : mX(x), mY(y), mZ(z) {}



        inline friend std::ostream& operator<< (std::ostream& os, const Vec3D& v) 

        {

            os << "(" << v.mX << ", " << v.mY << ", " << v.mZ << ")";

            return os;

        }

    };



}



#endif

I have put a functionally identical code in another class and it compiles and runs fine. What is wrong here?

EDIT1: corrected BOBVec3d to Vec3D, was a typo

EDIT2: removed using namespace Internal;, it is indeed point-defeating to have it in a header file

edited Nov 24 '18 at 14:23

asked Nov 22 '18 at 11:13

WurmD

627

1

On a tangential note, all identifiers that conrain two underscores in a row, and all identifiers that start with an underscore and a capital letter, are reserved. Defining such identifiers in your own code is UB.

– n.m.
Nov 22 '18 at 11:18

2

Putting using namespace Internal; in the header kind of defeats the purpose of having a namespace.

– molbdnilo
Nov 22 '18 at 11:37

add a comment |

I don't understand the compilation error C2676

for the below code

#ifndef __VEC_3D_H__

#define __VEC_3D_H__



#include <vector>

#include <cmath>



namespace Internal

{

    /** very simple 3D vector/ point */

    class Vec3D

    {

    public:

        float mX;

        float mY;

        float mZ;



        /// null constructor

        Vec3D(void) {}



        /// construct from data

        Vec3D(float x, float y, float z) : mX(x), mY(y), mZ(z) {}



        inline friend std::ostream& operator<< (std::ostream& os, const Vec3D& v) 

        {

            os << "(" << v.mX << ", " << v.mY << ", " << v.mZ << ")";

            return os;

        }

    };



}



#endif

I have put a functionally identical code in another class and it compiles and runs fine. What is wrong here?

EDIT1: corrected BOBVec3d to Vec3D, was a typo

EDIT2: removed using namespace Internal;, it is indeed point-defeating to have it in a header file

edited Nov 24 '18 at 14:23

asked Nov 22 '18 at 11:13

WurmD

627

1

On a tangential note, all identifiers that conrain two underscores in a row, and all identifiers that start with an underscore and a capital letter, are reserved. Defining such identifiers in your own code is UB.

– n.m.
Nov 22 '18 at 11:18

2

Putting using namespace Internal; in the header kind of defeats the purpose of having a namespace.

– molbdnilo
Nov 22 '18 at 11:37

add a comment |

I don't understand the compilation error C2676

for the below code

#ifndef __VEC_3D_H__

#define __VEC_3D_H__



#include <vector>

#include <cmath>



namespace Internal

{

    /** very simple 3D vector/ point */

    class Vec3D

    {

    public:

        float mX;

        float mY;

        float mZ;



        /// null constructor

        Vec3D(void) {}



        /// construct from data

        Vec3D(float x, float y, float z) : mX(x), mY(y), mZ(z) {}



        inline friend std::ostream& operator<< (std::ostream& os, const Vec3D& v) 

        {

            os << "(" << v.mX << ", " << v.mY << ", " << v.mZ << ")";

            return os;

        }

    };



}



#endif

I have put a functionally identical code in another class and it compiles and runs fine. What is wrong here?

EDIT1: corrected BOBVec3d to Vec3D, was a typo

EDIT2: removed using namespace Internal;, it is indeed point-defeating to have it in a header file

edited Nov 24 '18 at 14:23

asked Nov 22 '18 at 11:13

WurmD

627

I don't understand the compilation error C2676

for the below code

#ifndef __VEC_3D_H__

#define __VEC_3D_H__



#include <vector>

#include <cmath>



namespace Internal

{

    /** very simple 3D vector/ point */

    class Vec3D

    {

    public:

        float mX;

        float mY;

        float mZ;



        /// null constructor

        Vec3D(void) {}



        /// construct from data

        Vec3D(float x, float y, float z) : mX(x), mY(y), mZ(z) {}



        inline friend std::ostream& operator<< (std::ostream& os, const Vec3D& v) 

        {

            os << "(" << v.mX << ", " << v.mY << ", " << v.mZ << ")";

            return os;

        }

    };



}



#endif

I have put a functionally identical code in another class and it compiles and runs fine. What is wrong here?

EDIT1: corrected BOBVec3d to Vec3D, was a typo

EDIT2: removed using namespace Internal;, it is indeed point-defeating to have it in a header file

c++ operator-overloading

edited Nov 24 '18 at 14:23

asked Nov 22 '18 at 11:13

WurmD

627

edited Nov 24 '18 at 14:23

asked Nov 22 '18 at 11:13

WurmD

627

edited Nov 24 '18 at 14:23

asked Nov 22 '18 at 11:13

WurmD

627

asked Nov 22 '18 at 11:13

WurmD

627

asked Nov 22 '18 at 11:13

WurmD

627

1

On a tangential note, all identifiers that conrain two underscores in a row, and all identifiers that start with an underscore and a capital letter, are reserved. Defining such identifiers in your own code is UB.

– n.m.
Nov 22 '18 at 11:18

2

Putting using namespace Internal; in the header kind of defeats the purpose of having a namespace.

– molbdnilo
Nov 22 '18 at 11:37

add a comment |

1

On a tangential note, all identifiers that conrain two underscores in a row, and all identifiers that start with an underscore and a capital letter, are reserved. Defining such identifiers in your own code is UB.

– n.m.
Nov 22 '18 at 11:18

2

Putting using namespace Internal; in the header kind of defeats the purpose of having a namespace.

– molbdnilo
Nov 22 '18 at 11:37

On a tangential note, all identifiers that conrain two underscores in a row, and all identifiers that start with an underscore and a capital letter, are reserved. Defining such identifiers in your own code is UB.

– n.m.
Nov 22 '18 at 11:18

Putting using namespace Internal; in the header kind of defeats the purpose of having a namespace.

– molbdnilo
Nov 22 '18 at 11:37

add a comment |

2 Answers
2

active

oldest

votes

missing #include <iostream> at the top.

Fixed it.
(Oh what terribly terribly poor compilation errors in C++ can be..)

edited Nov 22 '18 at 12:41

answered Nov 22 '18 at 11:15

WurmD

627

You may want to check out an extension such as Resharper for C++ or Visual Assist X, they make trivial mistakes like this almost impossible to make. As a newbie I found it very helpful. :-)

– not an alien
Nov 22 '18 at 11:23

I installed Visual Assist, and will try it out for a month, but for this question's problem, it didn't help. (I commented the #include <iostream> in the top, saved and compiled it and: dropbox.com/s/bd3my8l3r7bqcrj/DidntHelp.PNG?raw=1

– WurmD
Nov 22 '18 at 13:40

I apologize. I actually use Resharper myself, but many people prefer to use VAX (for performance reasons on large projects, although I have had no issues), so thought I'd mention it as well. I checked your code with Resharper and it did seem to pick it up. Here's a picture.

– not an alien
Nov 22 '18 at 15:07

hm :), you mentioned ReSharper, but you linked to wholetomato.com :) You meant to link to jetbrains.com/resharper-cpp correct?

– WurmD
Nov 23 '18 at 12:54

uuh, I installed resharper and I'm confused about that's wrong on my end. What I see: dropbox.com/s/64verq3shjam969/What.PNG?raw=1 and the top red highlight says: "Precompiled header must be incluided at the top of the source file", and the bottom: dropbox.com/sh/v77svb2aqdzme2a/AABAyZJ6CX5LhcQpqEjajchSa?raw=1 what do you think is missing compared to yours @notanalien?

– WurmD
Nov 23 '18 at 14:07

|
show 2 more comments

Change BOBVec3d to Vec3D:

BOBVec3D(void) {}

BOBVec3D(float x, float y, float z) : mX(x), mY(y), mZ(z) {}

inline friend std::ostream& operator<< (std::ostream& os, const BOBVec3D& v);

Vec3D(void) {}

Vec3D((float x, float y, float z) : mX(x), mY(y), mZ(z) {}

inline friend std::ostream& operator<< (std::ostream& os, const Vec3D& v);

answered Nov 22 '18 at 11:18

snake_style

1,170410

sorry about that, was anonymizing the code and missed those entries

– WurmD
Nov 22 '18 at 13:16

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

missing #include <iostream> at the top.

Fixed it.
(Oh what terribly terribly poor compilation errors in C++ can be..)

edited Nov 22 '18 at 12:41

answered Nov 22 '18 at 11:15

WurmD

627

You may want to check out an extension such as Resharper for C++ or Visual Assist X, they make trivial mistakes like this almost impossible to make. As a newbie I found it very helpful. :-)

– not an alien
Nov 22 '18 at 11:23

I installed Visual Assist, and will try it out for a month, but for this question's problem, it didn't help. (I commented the #include <iostream> in the top, saved and compiled it and: dropbox.com/s/bd3my8l3r7bqcrj/DidntHelp.PNG?raw=1

– WurmD
Nov 22 '18 at 13:40

I apologize. I actually use Resharper myself, but many people prefer to use VAX (for performance reasons on large projects, although I have had no issues), so thought I'd mention it as well. I checked your code with Resharper and it did seem to pick it up. Here's a picture.

– not an alien
Nov 22 '18 at 15:07

hm :), you mentioned ReSharper, but you linked to wholetomato.com :) You meant to link to jetbrains.com/resharper-cpp correct?

– WurmD
Nov 23 '18 at 12:54

uuh, I installed resharper and I'm confused about that's wrong on my end. What I see: dropbox.com/s/64verq3shjam969/What.PNG?raw=1 and the top red highlight says: "Precompiled header must be incluided at the top of the source file", and the bottom: dropbox.com/sh/v77svb2aqdzme2a/AABAyZJ6CX5LhcQpqEjajchSa?raw=1 what do you think is missing compared to yours @notanalien?

– WurmD
Nov 23 '18 at 14:07

|
show 2 more comments

missing #include <iostream> at the top.

Fixed it.
(Oh what terribly terribly poor compilation errors in C++ can be..)

edited Nov 22 '18 at 12:41

answered Nov 22 '18 at 11:15

WurmD

627

You may want to check out an extension such as Resharper for C++ or Visual Assist X, they make trivial mistakes like this almost impossible to make. As a newbie I found it very helpful. :-)

– not an alien
Nov 22 '18 at 11:23

I installed Visual Assist, and will try it out for a month, but for this question's problem, it didn't help. (I commented the #include <iostream> in the top, saved and compiled it and: dropbox.com/s/bd3my8l3r7bqcrj/DidntHelp.PNG?raw=1

– WurmD
Nov 22 '18 at 13:40

I apologize. I actually use Resharper myself, but many people prefer to use VAX (for performance reasons on large projects, although I have had no issues), so thought I'd mention it as well. I checked your code with Resharper and it did seem to pick it up. Here's a picture.

– not an alien
Nov 22 '18 at 15:07

hm :), you mentioned ReSharper, but you linked to wholetomato.com :) You meant to link to jetbrains.com/resharper-cpp correct?

– WurmD
Nov 23 '18 at 12:54

uuh, I installed resharper and I'm confused about that's wrong on my end. What I see: dropbox.com/s/64verq3shjam969/What.PNG?raw=1 and the top red highlight says: "Precompiled header must be incluided at the top of the source file", and the bottom: dropbox.com/sh/v77svb2aqdzme2a/AABAyZJ6CX5LhcQpqEjajchSa?raw=1 what do you think is missing compared to yours @notanalien?

– WurmD
Nov 23 '18 at 14:07

|
show 2 more comments

missing #include <iostream> at the top.

Fixed it.
(Oh what terribly terribly poor compilation errors in C++ can be..)

edited Nov 22 '18 at 12:41

answered Nov 22 '18 at 11:15

WurmD

627

missing #include <iostream> at the top.

Fixed it.
(Oh what terribly terribly poor compilation errors in C++ can be..)

edited Nov 22 '18 at 12:41

answered Nov 22 '18 at 11:15

WurmD

627

edited Nov 22 '18 at 12:41

answered Nov 22 '18 at 11:15

WurmD

627

answered Nov 22 '18 at 11:15

WurmD

627

answered Nov 22 '18 at 11:15

WurmD

627

You may want to check out an extension such as Resharper for C++ or Visual Assist X, they make trivial mistakes like this almost impossible to make. As a newbie I found it very helpful. :-)

– not an alien
Nov 22 '18 at 11:23

I installed Visual Assist, and will try it out for a month, but for this question's problem, it didn't help. (I commented the #include <iostream> in the top, saved and compiled it and: dropbox.com/s/bd3my8l3r7bqcrj/DidntHelp.PNG?raw=1

– WurmD
Nov 22 '18 at 13:40

I apologize. I actually use Resharper myself, but many people prefer to use VAX (for performance reasons on large projects, although I have had no issues), so thought I'd mention it as well. I checked your code with Resharper and it did seem to pick it up. Here's a picture.

– not an alien
Nov 22 '18 at 15:07

hm :), you mentioned ReSharper, but you linked to wholetomato.com :) You meant to link to jetbrains.com/resharper-cpp correct?

– WurmD
Nov 23 '18 at 12:54

uuh, I installed resharper and I'm confused about that's wrong on my end. What I see: dropbox.com/s/64verq3shjam969/What.PNG?raw=1 and the top red highlight says: "Precompiled header must be incluided at the top of the source file", and the bottom: dropbox.com/sh/v77svb2aqdzme2a/AABAyZJ6CX5LhcQpqEjajchSa?raw=1 what do you think is missing compared to yours @notanalien?

– WurmD
Nov 23 '18 at 14:07

|
show 2 more comments

You may want to check out an extension such as Resharper for C++ or Visual Assist X, they make trivial mistakes like this almost impossible to make. As a newbie I found it very helpful. :-)

– not an alien
Nov 22 '18 at 11:23

I installed Visual Assist, and will try it out for a month, but for this question's problem, it didn't help. (I commented the #include <iostream> in the top, saved and compiled it and: dropbox.com/s/bd3my8l3r7bqcrj/DidntHelp.PNG?raw=1

– WurmD
Nov 22 '18 at 13:40

I apologize. I actually use Resharper myself, but many people prefer to use VAX (for performance reasons on large projects, although I have had no issues), so thought I'd mention it as well. I checked your code with Resharper and it did seem to pick it up. Here's a picture.

– not an alien
Nov 22 '18 at 15:07

hm :), you mentioned ReSharper, but you linked to wholetomato.com :) You meant to link to jetbrains.com/resharper-cpp correct?

– WurmD
Nov 23 '18 at 12:54

uuh, I installed resharper and I'm confused about that's wrong on my end. What I see: dropbox.com/s/64verq3shjam969/What.PNG?raw=1 and the top red highlight says: "Precompiled header must be incluided at the top of the source file", and the bottom: dropbox.com/sh/v77svb2aqdzme2a/AABAyZJ6CX5LhcQpqEjajchSa?raw=1 what do you think is missing compared to yours @notanalien?

– WurmD
Nov 23 '18 at 14:07

You may want to check out an extension such as Resharper for C++ or Visual Assist X, they make trivial mistakes like this almost impossible to make. As a newbie I found it very helpful. :-)

– not an alien
Nov 22 '18 at 11:23

I installed Visual Assist, and will try it out for a month, but for this question's problem, it didn't help. (I commented the #include <iostream> in the top, saved and compiled it and: dropbox.com/s/bd3my8l3r7bqcrj/DidntHelp.PNG?raw=1

– WurmD
Nov 22 '18 at 13:40

I apologize. I actually use Resharper myself, but many people prefer to use VAX (for performance reasons on large projects, although I have had no issues), so thought I'd mention it as well. I checked your code with Resharper and it did seem to pick it up. Here's a picture.

– not an alien
Nov 22 '18 at 15:07

hm :), you mentioned ReSharper, but you linked to wholetomato.com :) You meant to link to jetbrains.com/resharper-cpp correct?

– WurmD
Nov 23 '18 at 12:54

uuh, I installed resharper and I'm confused about that's wrong on my end. What I see: dropbox.com/s/64verq3shjam969/What.PNG?raw=1 and the top red highlight says: "Precompiled header must be incluided at the top of the source file", and the bottom: dropbox.com/sh/v77svb2aqdzme2a/AABAyZJ6CX5LhcQpqEjajchSa?raw=1 what do you think is missing compared to yours @notanalien?

– WurmD
Nov 23 '18 at 14:07

|
show 2 more comments

Change BOBVec3d to Vec3D:

BOBVec3D(void) {}

BOBVec3D(float x, float y, float z) : mX(x), mY(y), mZ(z) {}

inline friend std::ostream& operator<< (std::ostream& os, const BOBVec3D& v);

Vec3D(void) {}

Vec3D((float x, float y, float z) : mX(x), mY(y), mZ(z) {}

inline friend std::ostream& operator<< (std::ostream& os, const Vec3D& v);

answered Nov 22 '18 at 11:18

snake_style

1,170410

sorry about that, was anonymizing the code and missed those entries

– WurmD
Nov 22 '18 at 13:16

add a comment |

Change BOBVec3d to Vec3D:

BOBVec3D(void) {}

BOBVec3D(float x, float y, float z) : mX(x), mY(y), mZ(z) {}

inline friend std::ostream& operator<< (std::ostream& os, const BOBVec3D& v);

Vec3D(void) {}

Vec3D((float x, float y, float z) : mX(x), mY(y), mZ(z) {}

inline friend std::ostream& operator<< (std::ostream& os, const Vec3D& v);

answered Nov 22 '18 at 11:18

snake_style

1,170410

sorry about that, was anonymizing the code and missed those entries

– WurmD
Nov 22 '18 at 13:16

add a comment |

Change BOBVec3d to Vec3D:

BOBVec3D(void) {}

BOBVec3D(float x, float y, float z) : mX(x), mY(y), mZ(z) {}

inline friend std::ostream& operator<< (std::ostream& os, const BOBVec3D& v);

Vec3D(void) {}

Vec3D((float x, float y, float z) : mX(x), mY(y), mZ(z) {}

inline friend std::ostream& operator<< (std::ostream& os, const Vec3D& v);

answered Nov 22 '18 at 11:18

snake_style

1,170410

Change BOBVec3d to Vec3D:

BOBVec3D(void) {}

BOBVec3D(float x, float y, float z) : mX(x), mY(y), mZ(z) {}

inline friend std::ostream& operator<< (std::ostream& os, const BOBVec3D& v);

Vec3D(void) {}

Vec3D((float x, float y, float z) : mX(x), mY(y), mZ(z) {}

inline friend std::ostream& operator<< (std::ostream& os, const Vec3D& v);

answered Nov 22 '18 at 11:18

snake_style

1,170410

answered Nov 22 '18 at 11:18

snake_style

1,170410

answered Nov 22 '18 at 11:18

snake_style

1,170410

answered Nov 22 '18 at 11:18

snake_style

1,170410

sorry about that, was anonymizing the code and missed those entries

– WurmD
Nov 22 '18 at 13:16

add a comment |

sorry about that, was anonymizing the code and missed those entries

– WurmD
Nov 22 '18 at 13:16

sorry about that, was anonymizing the code and missed those entries

– WurmD
Nov 22 '18 at 13:16

add a comment |

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