Intialize circular buffer of Boost Library as member class Linux

aurquiel

Hello guys i am struggling trying to initialize the size of a circular buffer as member class

searching at Google i found another user asking how to do it. The number 3 must be the size of the buffer

class example {
  boost::circular_buffer<int> aspBuffer;

  public:
  example() : aspBuffer(3) {}
};

i am trying to do the same but not successful, Take a look at my header

#include <QObject> //To use the class as an Object
#include <boost/circular_buffer.hpp>

class backend: public QObject
{
    Q_OBJECT

public:
    //---------------------------PUBLIC VARIABLES BACKEND BEGIN---------------------
    boost::circular_buffer<unsigned char> circular_buff();     //buffer to hold the stream data
    //---------------------------PUBLIC VARIABLES BACKEND END-----------------------

    //---------------------------PUBLIC BACKEND FUNCTIONS BEGIN---------------------
    backend() : circular_buff(100);
    //---------------------------PUBLIC BACKEND FUNCTIONS END-----------------------

Compiler shows

/home/pasante/Escritorio/PIZZA/backend.h:21: error: class ‘backend’ does not have any field named ‘circular_buff’
     backend() : circular_buff(100);
                 ^~~~~~~~~~~~~

I am thinking maybe is a bad linking in the .pro file

I installed the lib boost through

sudo apt-get install libboost-all-dev

my .pro file

#******IMPORTANT LIBRARY OF BOOST LINK********
LIBS += -lboost_system\

but when i wtire #include <boos the autocomplete show me the path to <boost/circular_buffer.hpp>

I am not sure what i am doing wrong

Example of initiliazation as not member class

   #include <boost/circular_buffer.hpp>

   int main() {

      // Create a circular buffer with a capacity for 3 integers.
      boost::circular_buffer<int> cb(3);

   }

VRonin

boost::circular_buffer<unsigned char> circular_buff(); //buffer to hold the stream data

this is a method declaration, not a member, get rid of () and you are done

boost::circular_buffer<unsigned char> circular_buff;     //buffer to hold the stream data

P.S.
don't declare it public, please

aurquiel

Really thanks!!!!!!!!!!