Invalid declarator before with map of struct?

Invalid declarator before with map of struct?

By : Arktikh
Date : November 22 2020, 02:59 PM
To fix this issue Syntax issues aside, your code smells Java. In C++ where functions are first-class citizens, you do not need to create callback classess for every possible callback. Instead, you simply pass function-like objects - either a pointer to function, or something wrapped inside std::function. The former is simpler, the latter is more powerful. I suggest to work with simple pointers first. For instance, your code might be looking like following:
code :
void do_cmd(const std::vector<std::string>& args);
typedef void (*cmd_func)(const std::vector<std::string>& cmd_args);
std::map<std::string, cmd_func> cmd_map = { {"cmd", &do_cmd} };

int main() {

Share : facebook icon twitter icon
error: invalid declarator before ‘&’ token

error: invalid declarator before ‘&’ token

By : user2908710
Date : March 29 2020, 07:55 AM
I hope this helps you . Missing ; after the class definition.
Why the weird error message? Because it's entirely legal to create an object at that level of scope:
code :
class ABC {
} globalABC;
error: invalid declarator before with typedef

error: invalid declarator before with typedef

By : Arbi
Date : March 29 2020, 07:55 AM
To fix this issue You haven't shown us which source line the error refers to, but I'll assume it's this one:
code :
typedef Callback<void, Ptr<Vehicle>, std::string, Ptr<const Packet> > DeviceTraceCallback; 
invalid declarator before ‘MY_MAP’

invalid declarator before ‘MY_MAP’

By : Oscar
Date : March 29 2020, 07:55 AM
To fix this issue Your Link class definition should end with a semicolon after the last curly bracket.
C++ compiler error: “invalid declarator before”

C++ compiler error: “invalid declarator before”

By : user3488027
Date : March 29 2020, 07:55 AM
Does that help There are several things wrong with your code.
The line the compiler complains about is the definition of the static geometry method of FactGeometry. The structure of a definition is:
code :
<Return Type> <Class>::<Method Name>(<Parameters>) { ... }
std::shared_ptr<FactGeometry> FactGeometry::geometry(int choice){
    // code
return make_shared<CalcRectangle>();
return shared_ptr<FactGeometry>(new CalcRectangle());
Invalid Initializer Member Declarator

Invalid Initializer Member Declarator

By : asdf
Date : March 29 2020, 07:55 AM
Hope this helps I am trying to check if a field returned from SQL is null or not but I keep getting "Invalid Initializer Member Declarator" on the isDBNull , Make sure all properties are initialized within {} e.g.
Related Posts Related Posts :
  • How to avoid littering header files with std::
  • Why is this program not working? (Program to copy contents of file to another)
  • Difference between DBus and other Interprocess Communications method
  • How to fill a part of a multidimensional array in C++?
  • C++ SFML Game programming linkage error
  • How do GTK and Qt integrate with Linux in comparison to how they integrate with Windows and OS X?
  • Complexity analysis of loop with limited looping time
  • Boost test fails with enum classes inside namespaces
  • is this a function declaration?
  • Socket recv() one byte at a time
  • C++ Glibc Detected error. Double Free or corruption
  • OpenCV - How to write IplImage array in Mat form?
  • Qt event when anything changed on the window/screen + Screenshot
  • OpenGL Linker error, linking with uncompiled shader
  • Find 4 specific corner pixels and use them with warp perspective
  • Cin Execution Not Working (program.exe < filewithdata.txt)
  • cudaMallocManaged causes Access Violation
  • How to correctly read a value from stdin into a variable
  • Binary Search Tree Forgetting Every Node I Add
  • C++ Return Value from function not same as that value in function
  • Microsoft Visual Studio C++, OpenCV animation
  • C++ function pointer syntax. Why does (*) work but * not?
  • C++: Template class binary operator overloading - seg fault?
  • Passing buffer between two terminals (Named Pipe)
  • C++ parse sub-string to integer
  • Create stereo context for modern opengl
  • Memory leak, when using GLM
  • Get Control under cursor
  • Is this proper behavior? std::map iterator invalidation
  • 2D isometric engine - Math problems - Cube selection - diamond shape map
  • Open second window in Qt
  • Stack Overflow error with Vectors
  • Pure Virtual Friend Class
  • Object initialization syntax in C++
  • Variable undefined error
  • C++ tolower/toupper char pointer
  • Overhead with std::function
  • Is there a way to make a loop that get user input but doesn't stop if the user doesn't input anything?
  • OpenCV in cmake-based project: checking for contrib modules
  • shared_ptr vs unique_ptr uses in classes and children
  • MFC dialog Border padding changed after switching from VS2010 to 2012 or later
  • String rotator in C++ (bitwise rotation)
  • Custom sort vector of pair based on their values
  • Pointer to const overloaded member function
  • how to avoid this for-loop mess in c++?
  • Can the state of a standard C++ iostream manipulator be polled?
  • How to make sure a data type is as large as it needs to be in C++
  • Why is my first ofstream output in my else block missing the fill character?
  • Returning static/ normal arrays in recursion/another function
  • c++, why use const std::string & parameterName?
  • expression did not evaluate to a constant in C++ VS
  • Owner object that takes pre-created values ? Wrong design?
  • Cannot use Macro in a C++ constructor?
  • vector is loosing mat4 information
  • std::initializer_list to return member variables returns incorrect values
  • Unable to use Boost + Qt in Mac
  • Passing template function and overload as function argument
  • non standard extension warning when searching in a vector of unique_ptrs
  • Qt Windows x64 build succeeds in IDE but not on the command line
  • shadow
    Privacy Policy - Terms - Contact Us © animezone.co