forward-declaration
How can I declare a friend function in a namespace that takes an inner class as a parameter?
Consider this code: namespace foo {} class A { class B { }; friend int foo::bar( B& ); }; namespace foo { int bar( A::B& )[详细]
2023-04-12 01:23 分类：问答forward declaration with vector of class type - pointer to incomplete class type not allowed
I have two classes, foo and bar. foo.h #includes bar.h and contains a std::vector of pointers to bar objects. At some point during runtime, bar has to access this vector of pointers to other bar obje[详细]
2023-04-11 19:27 分类：问答About strongly typed enumerations forward declaration
I\'ve a set of classes in my namespace and want to group forward declaration in a define.hpp file. I\'ve already achieve this in others projects, here is an example :[详细]
2023-04-11 11:58 分类：问答What is the proper way to forward declare a pointer to a class for use inside the class declaration?
For example, class Segment { frie开发者_如何学运维nd bool someFunc( P_Segment p ); }; typedef boost::shared_ptr<Segment> P_Segment;[详细]
2023-04-10 07:46 分类：问答Incomplete definition of type "struct objc_method"
I\'m really confused with this problem. What I need to do is use some obj-c runtime feature in my project. Here is simple code in my .m file:[详细]
2023-04-09 06:57 分类：问答C - forward declaration of enums?
Forward declaration of enums in C does not work for me. I searched the internet and Stack Overflow but all of the questions regarding forward declarations of enumerators refer to C++. What do you do f[详细]
2023-04-05 20:31 分类：问答Django models: mutual references between two classes and impossibility to use forward declaration in python
I have defined two models where each one references the other, like so: class User(models.Model): # ...[详细]
2023-04-03 00:09 分类：问答Error: 'class name' redeclared as different kind of symbol?
I was facing the same error as asked in this question I overcome with this error by solution ofdeclaring class ahead of time in my .h file with the class parameter[详细]
2023-04-02 19:39 分类：问答Advantages of typedef over derived class?
Simply put, what are the (or are there any) differences between doing say class MyClassList : list<MyClass> { };[详细]
2023-04-02 16:00 分类：问答Forward declarations of unnamed struct
Bounty question: So, these two Foos aren\'t the same thing. Fine. The second form is given in a library. How do I forward-declare it given that I can\'t change it?[详细]
2023-04-02 00:20 分类：问答
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