boost - c++ Bridge pattern and smart pointer -

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i use bridge 1 class, , life create std::vector of std::vector of bridge.

whilst vector of bridge working.

for example : 

std::vector<bridge> lbridge(5)

the vector of vector not working. example :

std::vector<std::vector<bridge>> lbridge(5,std::vector<bridge>(4))

when create vector of vector, goes constructor bridge(const bridge & original), , original null...

this code :

bridge.h

#ifndef bridge_h #define bridge_h #pragma once  #include <myobject.h> #include <boost/make_shared.hpp>  class bridge{  public :      bridge(const bridge & original);     bridge(const myobject & innerobject);     bridge(){};     bridge& operator=(const ibridge& original); private :     boost::shared_ptr<myobject> mmyobjectptr; };  #endif

bridge.cpp

#include<bridge.h>    bridge::bridge(constbridge& inoriginal){     mmyobjectptr = inoriginal.mmyobjectptr->clone(); }  bridge::bridge(const myobject& ininnerobject){     mmyobjectptr = ininnerobject.clone(); }  bridge& bridge::operator=(const bridge& inoriginal){      if (this != &inoriginal){         mmyobjectptr = inoriginal.mmyobjectptr->clone();     }     return *this; }

you've failed "not working" means expected happen.

my best guess absolutely, positively, want of bridges default initialized, rather you've written, copy vector of bridges each entry of vector-of-vectors.

to this, you'll have make vector of empty vectors, , resize each of individual vectors. or alternatively, create empty vector of vectors, emplace_back individual vectors 1 @ time.


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