Error Cannot Declare Member Function Tatic To Have Static Linkage
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the cannot declare member function to have static linkage c++ workings and policies of this site About Us Learn more about
Cannot Declare Member Function To Have Static Linkage -fpermissive
Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions
Invalid Use Of Member In Static Member Function
Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other.
Error Cannot Declare Member Function Static Void To Have Static Linkage
Join them; it only takes a minute: Sign up Static member functions error; How to properly write the signature? up vote 88 down vote favorite 10 I am getting an error when trying to compile my code in g++ using the current signature: cannot declare member function static void Foo::Bar(std::ostream&, const Foo::Node*) to have static linkage My question is cannot define member function within c++ twofold: Why does it not Compile this way? What is the correct signature, and why? Signatures have always been the death of me when using C++ Edit: Here is the class header file, as well: class Foo { public: Foo(); ~Foo(); bool insert(const Foo2 &v); Foo * find(const Foo2 &v); const Foo * find(const Foo2 &v) const; void output(ostream &s) const; private: //Foo(const Foo &v); //Foo& operator =(const Foo &v); //Not implemented; unneeded struct Node { Foo2 info; Node *left; Node *right; }; Node * root; static bool insert(const Foo2 &v, Node *&p); static void output(ostream &s, const Node *p); static void deleteAll(Node *p); c++ static-members method-signature static-function share|improve this question edited Nov 15 '11 at 0:33 asked Nov 15 '11 at 0:23 Joshua 1,49242246 You should include all the relevant lines from the g++ error. –Keith Layne Nov 15 '11 at 0:49 2 The error message you list can't be produced by the code you posted. There is no Foo::Bar anywhere in your program fragment. Please post a complete, minimal
OCaml Objective-C Oracle PHP 5 Perl PhpMyAdmin Python 3 Ruby on Rails 3 Security Symfony 1 Symfony 2 UML UNIX & GNU/Linux Zend You are hereHome » C++ » Errors / Warnings C++ - Errors / Warnings undefined reference to static variable - Cannot declare member function ‘static void MyClass::myMethod()’ to have static linkage [-fpermissive] Submitted by undefined reference to static variable c++ Mi-K on Thursday, July 12, 2012 - 2:41pm In C++, we don't need to specify the static keyword in the declaration of undefined reference to static member the header and in the definition in the class. It means that this keyword has to be added only in the header. You probably know that using the static keyword means that the function is unique in http://stackoverflow.com/questions/8130066/static-member-functions-error-how-to-properly-write-the-signature a file. So if you add static in the .h and in the .cpp, you will have like two methods with the same name. And the compiler won't appreciate it. Let's take two examples, one not working and another yes. We are going to implement 2 files: MyClass.h MyClass.cpp The bad MyClass.h #ifndef MYCLASS_H_ #define MYCLASS_H_ class MyClass { public: MyClass(); virtual ~MyClass(); static void myMethod(); }; #endif /* MYCLASS_H_ */ MyClass.cpp #include "MyClass.h" https://www.badprog.com/c-errors-warnings-cannot-declare-member-function-static-void-myclassmymethod-to-have-static-linkage MyClass::MyClass() { } MyClass::~MyClass() { } static void MyClass::myMethod() { } The good MyClass.h #ifndef MYCLASS_H_ #define MYCLASS_H_ class MyClass { public: MyClass(); virtual ~MyClass(); static void myMethod(); }; #endif /* MYCLASS_H_ */ MyClass.cpp #include "MyClass.h" MyClass::MyClass() { } MyClass::~MyClass() { } void MyClass::myMethod() { } Conclusion A really annoying problem that you've just solved. Great job. ‹ C++ - Errors / Warnings - After compiling up C++ - Keyword › Comments Neimad (not verified) Tuesday, April 2, 2013 - 6:20pm Permalink Thanks! Comment:Thanks! I'm seeing that nobody said that, but may be this post has more visits than you think. reply Neeraj (not verified) Monday, August 4, 2014 - 11:21pm Permalink Thanks so much. I agree with Comment:Thanks so much. I agree with Neimad. A very useful and well written post. Keep the good work going! reply helioz2000 (not verified) Wednesday, September 2, 2015 - 3:44am Permalink Thanks - short and to the Comment:Thanks - short and to the point with no fluff. reply Add new comment Your name Comment * More information about text formatsPlain textNo HTML tags allowed.Lines and paragraphs break automatically. CAPTCHAThis question is for testing whether you are a human visitor and to prevent automated spam submissions. Verification * Type the characters you see in the picture; if you can't read them, submit the form